PROJECT ABACUSENVIRONMENTAL DATA

Illinois: public water systems and their UCMR 5 PFAS results

Every public water system EPA lists for the state, tested or not

UCMR 5EPA monitoring data
2,207Systems listed
487Sampled under UCMR 5
128With PFAS detected
30Highest result at or above a 2024 EPA limit

2,207 community and non-transient non-community water systems are listed for Illinois in EPA SDWIS. 487 were sampled under UCMR 5; 128 of those had at least one PFAS result at or above the reporting level, and 30 had a highest single result at or above a 2024 EPA limit (PFOA or PFOS 4 ppt, or Hazard Index 1).

Illinois map · Download: systems (CSV) · all results (CSV, gzip)

These are monitoring results collected under EPA's Fifth Unregulated Contaminant Monitoring Rule (UCMR 5) at entry points, where treated water enters the distribution system; they are not tap-water samples. They are not compliance determinations: compliance with EPA's 2024 PFAS limits is judged on running annual averages of compliance monitoring, required from 2029, so a single UCMR 5 result at or above a limit is not a violation. “< MRL” means the compound was not quantified at EPA's minimum reporting level; it does not mean zero.

Sampled under UCMR 5 (487)

SystemPWSIDCityPopulationHighest PFOA (ppt)Highest PFOS (ppt)Highest HIHighest single result
AbingdonIL0950050Monmouth3,2759.44.80.002PFOA 1–3 × its limit
Abs Water CoopIL0015350Clayton7,095<MRL<MRL0No PFAS detected
AddisonIL0430050Addison38,017<MRL<MRL0No PFAS detected
Advocate Christ Medical CenterIL3162461Libertyville10,000<MRL<MRL0No PFAS detected
AledoIL1310050Aledo3,470<MRL<MRL0No PFAS detected
Alexander Water DistrictIL1370020Alexander442<MRL<MRL0Other PFAS detected
AlgonquinIL1110050Algonquin30,700<MRL<MRL0No PFAS detected
AlsipIL0310030Alsip19,063<MRL<MRL0No PFAS detected
AltonaIL0950100Altona483<MRL<MRL0No PFAS detected
American Water Oper And Maintenance, LlcIL1635237Scott Air Force Base6,779<MRL<MRL0Other PFAS detected
AnnaIL1810050Anna4,910<MRL<MRL0No PFAS detected
AntiochIL0970050Antioch14,175<MRL<MRL0No PFAS detected
Aqua Illinois-Candlewick DvnIL0075050Glenview6,426<MRL<MRL0No PFAS detected
Aqua Illinois-KankakeeIL0915030Glenview80,000<MRL<MRL0No PFAS detected
Aqua Illinois-North Maine UtilitiesIL0315350Glenview30,043<MRL<MRL0No PFAS detected
Aqua Illinois-PeotoneIL1970750Glenview4,182<MRL<MRL0No PFAS detected
Aqua Illinois-University ParkIL1975030Glenview7,002<MRL<MRL0.003Hazard Index below its limit
Aqua Illinois-Vermilion CountyIL1835120Glenview30,106<MRL<MRL0Other PFAS detected
Aqua Illinois-WillowbrookIL1977870Glenview5,100<MRL<MRL0No PFAS detected
Arlington HeightsIL0314030Arlington Heights73,320<MRL<MRL0No PFAS detected
AshkumIL0750050Ashkum800<MRL<MRL0No PFAS detected
AthensIL1290050Athens4,575<MRL<MRL0No PFAS detected
AuburnIL1670050Auburn4,574<MRL<MRL0No PFAS detected
AuroraIL0894070Aurora183,000<MRL<MRL0.002Hazard Index below its limit
BarringtonIL0974080Barrington10,327<MRL<MRL0No PFAS detected
BartlettIL0314120Bartlett41,500<MRL<MRL0No PFAS detected
BataviaIL0894130Batavia26,098<MRL<MRL0No PFAS detected
Beach ParkIL0970190Beach Park8,710<MRL<MRL0No PFAS detected
BeardstownIL0170150Beardstown5,951<MRL<MRL0No PFAS detected
BeecherIL1970050Beecher4,713<MRL<MRL0No PFAS detected
BellwoodIL0310150Bellwood19,156<MRL<MRL0No PFAS detected
BelvidereIL0070050Belvidere25,339<MRL<MRL0.55Hazard Index below its limit
BensenvilleIL0434140Bensenville18,537<MRL<MRL0No PFAS detected
BentonIL0550050Benton8,104<MRL<MRL0Other PFAS detected
BerkeleyIL0310180Berkeley5,214<MRL<MRL0No PFAS detected
BerwynIL0310210Berwyn57,250<MRL<MRL0No PFAS detected
BethaltoIL1190150Bethalto15,210<MRL<MRL0.362Hazard Index below its limit
BlandinsvilleIL1090100Blandinsville569<MRL<MRL0No PFAS detected
BloomingdaleIL0430100Bloomingdale22,018<MRL<MRL0No PFAS detected
BloomingtonIL1130200Bloomington79,000<MRL<MRL0Other PFAS detected
Blue IslandIL0310240Blue Island21,494<MRL<MRL0No PFAS detected
BluffsIL1710100Bluffs748<MRL<MRL0No PFAS detected
Bond/Madison Water CompanyIL0050020Pocahontas6,645<MRL<MRL0Other PFAS detected
Bookwalter Woods MhpIL0635125Gardner389<MRL<MRL0No PFAS detected
BraidwoodIL1970150Braidwood6,194<MRL<MRL0No PFAS detected
BreeseIL0270250Breese4,772<MRL<MRL0No PFAS detected
BridgeviewIL0310270Bridgeview16,467<MRL<MRL0No PFAS detected
BrightonIL1174160Brighton5,041<MRL<MRL0Other PFAS detected
BroadviewIL0310300Broadview7,847<MRL<MRL0No PFAS detected
BrookfieldIL0310330Brookfield18,776<MRL<MRL0No PFAS detected
BuckleyIL0750150Buckley500<MRL<MRL0No PFAS detected
BudaIL0110100Peru482<MRL<MRL0No PFAS detected
Buffalo GroveIL0314180Buffalo Grove43,212<MRL<MRL0No PFAS detected
BurnhamIL0310360Burnham3,989<MRL<MRL0No PFAS detected
Burr RidgeIL0434190Burr Ridge11,192<MRL<MRL0No PFAS detected
BushnellIL1090150Bushnell2,972<MRL<MRL0No PFAS detected
ByronIL1410100Byron3,784<MRL<MRL0No PFAS detected
Cahokia HeightsIL1635000Cahokia Heights12,528<MRL<MRL0Other PFAS detected
Calhoun County RwdIL0130010Hardin4,438<MRL<MRL0No PFAS detected
Calumet CityIL0310390Calumet City37,000<MRL<MRL0Other PFAS detected
Calumet ParkIL0310420Calumet Park8,442<MRL<MRL0No PFAS detected
CantonIL0570250Canton16,748<MRL<MRL0Other PFAS detected
Captain James A Lovell FhccIL3161232North Chicago12,100<MRL<MRL0No PFAS detected
CarbondaleIL0770150Carbondale22,107<MRL<MRL0No PFAS detected
CarlinvilleIL1170150Carlinville6,598<MRL<MRL0No PFAS detected
CarlyleIL0270300Carlyle3,373<MRL<MRL0No PFAS detected
CarmiIL1930100Carmi6,307<MRL<MRL0No PFAS detected
Carol StreamIL0430200Carol Stream39,854<MRL<MRL0Other PFAS detected
CarpentersvilleIL0890200Carpentersville37,983<MRL<MRL0No PFAS detected
CarrolltonIL0610050Carrollton2,513<MRL<MRL0No PFAS detected
CartervilleIL1990150Carterville6,528<MRL<MRL0Other PFAS detected
CaryIL1110100Cary17,826<MRL<MRL0Other PFAS detected
CaseyIL0230050Casey3,274<MRL<MRL0No PFAS detected
CaseyvilleIL1630250Caseyville13,798<MRL<MRL0Other PFAS detected
Caterpillar Trail PwdIL2035030East Peoria5,125<MRL<MRL0No PFAS detected
CentraliaIL1214220Centralia12,182<MRL<MRL0No PFAS detected
ChannahonIL1970200Channahon13,3804.65.90.009PFOS 1–3 × its limit
CharlestonIL0290100Charleston17,286<MRL<MRL0Other PFAS detected
ChathamIL1670300Chatham16,423<MRL<MRL0No PFAS detected
Cherry ValleyIL2010050Cherry Valley4,731<MRL<MRL0No PFAS detected
ChesterIL1570100Chester8,407<MRL<MRL0.002Hazard Index below its limit
ChicagoIL0316000Chicago2,721,308<MRL<MRL0No PFAS detected
Chicago HeightsIL0310450Chicago Heights26,184<MRL<MRL0No PFAS detected
Chicago RidgeIL0310480Chicago Ridge14,130<MRL<MRL0No PFAS detected
ChillicotheIL1430200Chillicothe6,660<MRL<MRL0Other PFAS detected
CiceroIL0310510Cicero83,000<MRL<MRL0No PFAS detected
Clarendon HillsIL0430250Clarendon Hills8,702<MRL<MRL0No PFAS detected
Clark-Edgar RwdIL0230010Marshall9,657<MRL<MRL0No PFAS detected
Clear Water Service CorpIL0295100Mattoon8,900<MRL<MRL0No PFAS detected
ClintonIL0390050Clinton7,200<MRL<MRL0No PFAS detected
Coal CityIL0630200Coal City5,845<MRL<MRL0No PFAS detected
Coal ValleyIL1614260Coal Valley3,873<MRL<MRL0No PFAS detected
Coal Valley PwdIL1995250Marion4,023<MRL<MRL0No PFAS detected
CollinsvilleIL1194280Collinsville30,616188.91.208PFOA ≥ 3 × its limit
ColumbiaIL1330050Columbia11,129<MRL<MRL0.002Hazard Index below its limit
Corinth PwdIL1995120Pittsburg3,927<MRL<MRL0Other PFAS detected
CortlandIL0370051Cortland4,398<MRL<MRL0No PFAS detected
Country Club HillsIL0310540Country Club Hills16,500<MRL<MRL0No PFAS detected
CountrysideIL0310570Countryside6,420<MRL<MRL0No PFAS detected
Crest HillIL1970250Crest Hill20,22313.7<MRL1.222PFOA ≥ 3 × its limit
CrestwoodIL0310600Crestwood10,826<MRL<MRL0No PFAS detected
CreteIL1970300Crete8,386<MRL<MRL0No PFAS detected
Creve CoeurIL1790100Creve Coeur4,934<MRL<MRL0No PFAS detected
Crystal LakeIL1110150Crystal Lake40,661<MRL<MRL0.002Hazard Index below its limit
Crystal Lawns Addition Improvement AssocIL1975480Joliet1,435<MRL<MRL0.002Hazard Index below its limit
Curran-Gardner Township PwdIL1675350Springfield6,651<MRL<MRL0No PFAS detected
Dallas Rural Water DistrictIL0710010Hamilton6,370<MRL<MRL0No PFAS detected
DarienIL0430270Darien21,751<MRL<MRL0No PFAS detected
DecaturIL1150150Decatur76,122<MRL<MRL0No PFAS detected
DeerfieldIL0974340Deerfield19,196<MRL<MRL0No PFAS detected
DekalbIL0370100Dekalb40,290<MRL<MRL0No PFAS detected
Des PlainesIL0310630Des Plaines60,675<MRL<MRL0No PFAS detected
DixmoorIL0310660Dixmoor2,9734.85.50PFOS 1–3 × its limit
DixonIL1030200Dixon15,096<MRL<MRL0No PFAS detected
DoltonIL0310690Dolton20,510<MRL<MRL0No PFAS detected
DoverIL0110350Princeton200<MRL<MRL0No PFAS detected
Downers GroveIL0430300Downers Grove49,425<MRL<MRL0No PFAS detected
DupoIL1630350Dupo4,684<MRL5.60.311PFOS 1–3 × its limit
DuquoinIL1450100Duquoin7,169<MRL<MRL0Other PFAS detected
DwightIL1050250Dwight4,400<MRL<MRL0No PFAS detected
East AltonIL1190200East Alton5,78616170.884PFOS ≥ 3 × its limit
East MolineIL1610250East Moline21,374<MRL<MRL0.002Hazard Index below its limit
East PeoriaIL1790200East Peoria22,484<MRL4.20.414PFOS 1–3 × its limit
Eastern Illinois UniversityIL0295500Charleston5,500<MRL<MRL0No PFAS detected
EdwardsvilleIL1190250Edwardsville26,808<MRL<MRL0.002Hazard Index below its limit
EffinghamIL0490250Effingham12,252<MRL<MRL0No PFAS detected
Eisenhower AcademyIL3004572Joliet300<MRL<MRL0Other PFAS detected
Ej Water CooperativeIL0790010Dieterich29,720<MRL<MRL0Other PFAS detected
ElburnIL0890300Elburn6,5597.5<MRL0PFOA 1–3 × its limit
EldoradoIL1655030Eldorado4,715<MRL<MRL0No PFAS detected
ElginIL0894380Elgin114,797<MRL<MRL0Other PFAS detected
Elk Grove VillageIL0314400Elk Grove Village31,802<MRL<MRL0No PFAS detected
ElmhurstIL0430350Elmhurst45,000<MRL<MRL0Other PFAS detected
Elmwood ParkIL0310780Elmwood Park25,000<MRL<MRL0No PFAS detected
Embarras Area Water DistrictIL0290020Charleston3,750<MRL<MRL0No PFAS detected
EurekaIL2030200Eureka5,216<MRL<MRL0No PFAS detected
EvanstonIL0310810Evanston74,486<MRL<MRL0No PFAS detected
Evergreen ParkIL0310840Evergreen Park19,943<MRL<MRL0No PFAS detected
FairburyIL1050350Fairbury3,633<MRL<MRL0No PFAS detected
FairfieldIL1910100Fairfield5,998<MRL<MRL0No PFAS detected
Fayette Water CompanyIL0510010Brownstown5,608<MRL<MRL0No PFAS detected
FloraIL0250100Flora5,233<MRL<MRL0No PFAS detected
FlossmoorIL0310870Flossmoor9,371<MRL<MRL0No PFAS detected
Forest ParkIL0310900Forest Park14,340<MRL<MRL0No PFAS detected
ForsythIL1150200Forsyth3,490<MRL<MRL0No PFAS detected
Fort Massac PwdIL1275050Metropolis6,360<MRL<MRL0No PFAS detected
Fosterburg PwdIL1195220Alton7,940<MRL<MRL0Other PFAS detected
Fountain Water DistrictIL1330020Valmeyer4,350<MRL<MRL0No PFAS detected
Fox LakeIL0970200Ingleside11,780<MRL50PFOS 1–3 × its limit
Fox River GroveIL1110200Fox River Grove4,702<MRL<MRL0.46Hazard Index below its limit
FrankfortIL1970400Frankfort24,000<MRL<MRL0No PFAS detected
Franklin ParkIL0310960Franklin Park18,467<MRL<MRL0No PFAS detected
FreeburgIL1630600Freeburg4,707<MRL70PFOS 1–3 × its limit
FreeportIL1770200Freeport23,930<MRL140PFOS ≥ 3 × its limit
FultonIL1950250Fulton3,346<MRL<MRL0Other PFAS detected
GalenaIL0850200Galena3,308<MRL<MRL0No PFAS detected
GalesburgIL0950200Galesburg31,620144.20.003PFOA ≥ 3 × its limit
GeneseoIL0730500Geneseo6,539<MRL<MRL0Other PFAS detected
GenevaIL0890350Geneva21,247<MRL<MRL0No PFAS detected
GenoaIL0370150Genoa5,298<MRL<MRL0Other PFAS detected
GeorgetownIL1830350Georgetown4,200<MRL<MRL0No PFAS detected
Gibson CityIL0530100Gibson City3,500<MRL<MRL0No PFAS detected
GilbertsIL0890400Gilberts8,366<MRL<MRL0No PFAS detected
GillespieIL1170400Gillespie3,737<MRL<MRL0No PFAS detected
Glen CarbonIL1190300Glen Carbon12,618<MRL<MRL0Other PFAS detected
Glen EllynIL0430450Glen Ellyn28,500<MRL<MRL0No PFAS detected
GlencoeIL0310990Glencoe8,849<MRL<MRL0No PFAS detected
Glendale HeightsIL0430400Glendale Heights33,176<MRL<MRL0No PFAS detected
GlenviewIL0311020Glenview47,856<MRL<MRL0No PFAS detected
GlenwoodIL0311050Glenwood8,956<MRL<MRL0No PFAS detected
Grandwood Park Subdivision - Lake Co PwIL0975600Libertyville5,751<MRL<MRL0No PFAS detected
GrayslakeIL0970250Grayslake21,248<MRL<MRL0No PFAS detected
Great Lakes Naval Training StationIL0975227Great Lakes23,000<MRL<MRL0No PFAS detected
GreenvilleIL0050050Greenville8,310<MRL<MRL0No PFAS detected
GurneeIL0970350Gurnee30,193<MRL<MRL0No PFAS detected
HainesvilleIL0970400Vernon Hills3,528<MRL<MRL0No PFAS detected
Hamilton County Water DistrictIL0651000Mcleansboro3,958<MRL<MRL0Other PFAS detected
HampshireIL0890450Hampshire7,758<MRL<MRL0No PFAS detected
HanoverIL0850250Hanover863<MRL<MRL0No PFAS detected
Hanover ParkIL0314480Hanover Park37,470<MRL<MRL0No PFAS detected
HarrisburgIL1650200Harrisburg8,524<MRL<MRL0No PFAS detected
HarvardIL1110250Harvard9,469<MRL<MRL0No PFAS detected
HarveyIL0311110Harvey25,000<MRL<MRL0No PFAS detected
Harwood HeightsIL0311140Hardwood Heights9,065<MRL<MRL0No PFAS detected
HavanaIL1250200Havana2,963<MRL<MRL0No PFAS detected
Hazel CrestIL0311170Hazel Crest13,792<MRL<MRL0No PFAS detected
HerrinIL1990400Herrin12,747<MRL<MRL0Other PFAS detected
Hickory HillsIL0311200Hickory Hills14,505<MRL<MRL0No PFAS detected
HighlandIL1190550Highland10,674<MRL<MRL0Other PFAS detected
Highland ParkIL0970500Highland Park30,176<MRL<MRL0No PFAS detected
HighwoodIL0970550Highwood5,335<MRL<MRL0No PFAS detected
HillsboroIL1350300Hillsboro4,402<MRL<MRL0No PFAS detected
HillsideIL0311230Hillside8,200<MRL<MRL0No PFAS detected
HinsdaleIL0434520Hinsdale17,900<MRL<MRL0No PFAS detected
Hoffman EstatesIL0311290Hoffman Estates50,179<MRL<MRL0No PFAS detected
Holiday Shores SdIL1195110Edwardsville3,0254<MRL0PFOA 1–3 × its limit
HometownIL0311320Hometown4,240<MRL<MRL0No PFAS detected
HomewoodIL0311350Homewood19,4634.3<MRL0PFOA 1–3 × its limit
HoopestonIL1830450Hoopeston5,802<MRL<MRL0No PFAS detected
HuntleyIL1110350Huntley28,495<MRL<MRL0No PFAS detected
Il American-AltonIL1195150Godfrey46,127<MRL<MRL0Other PFAS detected
Il American-AndalusiaIL1610050Godfrey1,184<MRL<MRL0No PFAS detected
Il American-ChampaignIL0195300Godfrey150,000<MRL<MRL0No PFAS detected
Il American-Chicago SuburbanIL0315150Godfrey11,187<MRL<MRL0No PFAS detected
Il American-ClarendonIL0435300Godfrey625<MRL<MRL0No PFAS detected
Il American-Country ClubIL0435350Godfrey1,014<MRL<MRL0No PFAS detected
Il American-East St LouisIL1635040Godfrey131,368<MRL<MRL0Other PFAS detected
Il American-FernwayIL0315030Godfrey5,521<MRL<MRL0No PFAS detected
Il American-GalenaIL0855050Godfrey2,294<MRL<MRL0No PFAS detected
Il American-Granite CityIL1195030Godfrey33,572<MRL<MRL0Other PFAS detected
Il American-Homer TownshipIL1970100Godfrey24,543<MRL<MRL0No PFAS detected
Il American-JerseyvilleIL0830250Godfrey8,412<MRL<MRL0No PFAS detected
Il American-Lake HolidayIL0995200Godfrey4,750<MRL<MRL0No PFAS detected
Il American-Liberty Ridge WestIL0435650Godfrey3,307<MRL<MRL0No PFAS detected
Il American-LincolnIL1075030Godfrey15,2005.7<MRL0PFOA 1–3 × its limit
Il American-PekinIL1795040Godfrey31,731<MRL4.40.892PFOS 1–3 × its limit
Il American-PeoriaIL1435030Godfrey137,575<MRL6.50.002PFOS 1–3 × its limit
Il American-PontiacIL1055030Godfrey11,864<MRL<MRL0Other PFAS detected
Il American-South BeloitIL2010450Godfrey7,893<MRL<MRL0.002Hazard Index below its limit
Il American-SterlingIL1955040Godfrey14,782<MRL<MRL0No PFAS detected
Il American-StreatorIL0995030Godfrey19,000<MRL<MRL0.003Hazard Index below its limit
Il American-Valley ViewIL0437350Godfrey6,7217.3<MRL0PFOA 1–3 × its limit
Il American-West SuburbanIL1974151Godfrey73,978<MRL<MRL0No PFAS detected
Il American-Whispering HillsIL1115700Godfrey8,3008.3<MRL0.574PFOA 1–3 × its limit
Illinois State University-NormalIL1135510Normal6,600<MRL<MRL0No PFAS detected
Island LakeIL0974540Island Lake8,066<MRL<MRL0No PFAS detected
ItascaIL0430500Itasca9,506<MRL<MRL0Other PFAS detected
JacksonvilleIL1370200Jacksonville19,903<MRL<MRL0Other PFAS detected
Jersey RwcIL0835300Jerseyville12,750<MRL<MRL0Other PFAS detected
Johnston CityIL1990500Johnston City3,509<MRL<MRL0Other PFAS detected
JolietIL1970450Joliet160,000<MRL<MRL0No PFAS detected
Justice-Willow Springs Water CommissionIL0315820Justice18,450<MRL<MRL0No PFAS detected
KenilworthIL0311500Kenilworth2,514<MRL<MRL0No PFAS detected
KewaneeIL0730650Kewanee12,509<MRL<MRL0No PFAS detected
KinmundyIL1210300Kinmundy940<MRL<MRL0No PFAS detected
La GrangeIL0311530Lagrange16,200<MRL<MRL0No PFAS detected
La Grange Highlands Sanitary DistrictIL0315860Lagrange6,600<MRL<MRL0No PFAS detected
La Grange ParkIL0311560Lagrange Park13,011<MRL<MRL0No PFAS detected
La SalleIL0990300La Salle9,700<MRL<MRL0.002Hazard Index below its limit
Lake BluffIL0970750Lake Bluff5,600<MRL<MRL0No PFAS detected
Lake ForestIL0970800Lake Forest19,642<MRL<MRL0No PFAS detected
Lake In The HillsIL1110400Lake In The Hills28,661<MRL<MRL0No PFAS detected
Lake Of Egypt PwdIL1995200Marion11,368<MRL<MRL0No PFAS detected
Lake Sara Area Water Co-Op, Inc.IL0495150Effingham4,071<MRL<MRL0Other PFAS detected
Lake VillaIL0970840Lake Villa8,829<MRL<MRL0No PFAS detected
Lake Windermere Estates SubdivisionIL1795730Tremont300<MRL<MRL0No PFAS detected
Lake ZurichIL0970850Lake Zurich19,759<MRL<MRL0Other PFAS detected
LansingIL0311590Lansing29,076<MRL<MRL0No PFAS detected
LawrencevilleIL1010150Lawrenceville4,524<MRL<MRL0No PFAS detected
Lcpw - Pekara SubdivisionIL0975900Libertyville3,711<MRL<MRL0No PFAS detected
Le RoyIL1130750Leroy3,498<MRL<MRL0No PFAS detected
LebanonIL1630650Lebanon4,714<MRL<MRL0No PFAS detected
LemontIL0311620Lemont18,513<MRL<MRL0No PFAS detected
Leyden Twsp Water DistrictIL0315880Franklin Park10,000<MRL<MRL0No PFAS detected
LibertyvilleIL0970900Libertyville20,500<MRL<MRL0Other PFAS detected
LincolnshireIL0970950Lincolnshire7,940<MRL<MRL0No PFAS detected
LincolnwoodIL0311650Lincolonwood13,463<MRL<MRL0No PFAS detected
LindenhurstIL0971000Lindenhurst14,500<MRL<MRL0No PFAS detected
LisleIL0430551Lisle24,223<MRL<MRL0No PFAS detected
LitchfieldIL1350400Litchfield6,648<MRL<MRL0No PFAS detected
LockportIL1970500Lockport23,100<MRL<MRL0.922Hazard Index below its limit
LombardIL0430600Lombard44,476<MRL<MRL0No PFAS detected
Long Creek Township PwsIL1155150Decatur7,850<MRL<MRL0No PFAS detected
Loves ParkIL2010150Loves Park23,335<MRL<MRL0No PFAS detected
Low Point Water DistrictIL2035100Lowpoint200<MRL<MRL0No PFAS detected
Lutheran General HospitalIL3154633Libertyville3,400<MRL<MRL0No PFAS detected
LynwoodIL0311680Lynwood9,698<MRL<MRL0No PFAS detected
LyonsIL0311710Lyons10,304<MRL<MRL0No PFAS detected
MackinawIL1790350Mackinaw3,399<MRL<MRL0No PFAS detected
MacombIL1090350Macomb15,051<MRL<MRL0No PFAS detected
MahometIL0190450Mahomet7,000<MRL<MRL0No PFAS detected
ManhattanIL1970550Manhattan10,340<MRL<MRL0No PFAS detected
MarengoIL1110650Marengo7,572<MRL<MRL0.005Hazard Index below its limit
MarionIL1990550Marion16,855<MRL<MRL0Other PFAS detected
MarkhamIL0311770Markham12,500<MRL<MRL0Other PFAS detected
MarseillesIL0990500Marseilles5,061<MRL<MRL0No PFAS detected
MarshallIL0230100Marshall3,947<MRL<MRL0No PFAS detected
MaryvilleIL1190750Maryville10,150<MRL<MRL0No PFAS detected
MascoutahIL1630800Mascoutah8,759<MRL<MRL0No PFAS detected
MattesonIL0311800Matteson18,293<MRL<MRL0No PFAS detected
MattoonIL0290250Mattoon19,500<MRL<MRL0Other PFAS detected
MaywoodIL0311830Maywood24,090<MRL<MRL0No PFAS detected
MchenryIL1110600Mchenry22,335<MRL<MRL0.002Hazard Index below its limit
Melrose ParkIL0311860Melrose Park24,206<MRL<MRL0No PFAS detected
MendonIL0010500Mendon953<MRL<MRL0No PFAS detected
MendotaIL0990550Mendota7,100<MRL<MRL0No PFAS detected
MetamoraIL2030350Metamora3,895<MRL<MRL0No PFAS detected
MetropolisIL1270150Metropolis6,309<MRL<MRL0No PFAS detected
MidlothianIL0311920Midlothian14,819<MRL<MRL0No PFAS detected
MilanIL1610400Milan4,945<MRL<MRL0No PFAS detected
Mill Creek PwdIL0015300Quincy5,755<MRL<MRL0No PFAS detected
Mill Creek Water Reclamation DistrictIL0890120Geneva8,000<MRL<MRL0No PFAS detected
MillstadtIL1630850Swansea4,071<MRL<MRL0.011Hazard Index below its limit
Millstone PwdIL1515050Nashville5,565<MRL<MRL0No PFAS detected
MinookaIL0630550Minooka12,800<MRL<MRL0.002Hazard Index below its limit
Mitchell PwdIL1195210Granite City5,253<MRL<MRL0.011Hazard Index below its limit
MokenaIL1970600Mokena19,887<MRL<MRL0No PFAS detected
MolineIL1610450Moline44,500<MRL<MRL0Other PFAS detected
MoneeIL1970650Monee5,148<MRL<MRL0No PFAS detected
MonmouthIL1870150Monmouth8,902<MRL<MRL0No PFAS detected
MontgomeryIL0894690Montgomery28,956<MRL<MRL0No PFAS detected
MonticelloIL1470350Monticello5,548<MRL<MRL0No PFAS detected
Moro PwdIL1195250Moro750<MRL<MRL0.462Hazard Index below its limit
MorrisIL0630600Morris14,775<MRL<MRL0No PFAS detected
MorrisonIL1950350Morrison4,188<MRL<MRL0No PFAS detected
MortonIL1790500Morton17,117<MRL<MRL0No PFAS detected
Morton GroveIL0311950Morton Grove25,297<MRL<MRL0No PFAS detected
Mount CarmelIL1850200Mt Carmel7,015<MRL4.80.002PFOS 1–3 × its limit
Mount OliveIL1170700Aviston2,193<MRL<MRL0No PFAS detected
Mount ProspectIL0311980Mount Prospect41,000<MRL<MRL0No PFAS detected
Mount VernonIL0810300Mount Vernon15,793<MRL<MRL0Other PFAS detected
Mount ZionIL1150350Mount Zion5,833<MRL<MRL0Other PFAS detected
MundeleinIL0971150Mundelein31,500<MRL<MRL0No PFAS detected
Murdale PwdIL0775200Murphysboro4,963<MRL<MRL0No PFAS detected
MurphysboroIL0770500Murphysboro10,241<MRL<MRL0Other PFAS detected
NapervilleIL0434670Naperville156,406<MRL<MRL0No PFAS detected
NashvilleIL1890300Nashville3,230<MRL<MRL0No PFAS detected
New BadenIL0274700New Baden4,178<MRL9.40PFOS 1–3 × its limit
New LenoxIL1970700New Lenox29,200<MRL<MRL0No PFAS detected
NilesIL0312010Niles29,350<MRL<MRL0No PFAS detected
NormalIL1130900Normal52,736<MRL<MRL0No PFAS detected
NorridgeIL0312040Norridge15,251<MRL<MRL0No PFAS detected
North AuroraIL0890600North Aurora18,261<MRL<MRL0No PFAS detected
North ChicagoIL0971250North Chicago16,813<MRL<MRL0No PFAS detected
North East Central PwdIL1195280Edwardsville3,9754.14.10PFOA 1–3 × its limit
North East Marion County Water CmpnyIL1210030Salem3,220<MRL<MRL0No PFAS detected
North Park PwdIL2015500Machesney Park35,5806.27.31.823PFOS 1–3 × its limit
North RiversideIL0312160North Riverside7,071<MRL<MRL0No PFAS detected
North Tazewell PwdIL1795780East Peoria7,625<MRL<MRL0No PFAS detected
NorthbrookIL0312070Northbrook34,200<MRL<MRL0No PFAS detected
Northeast Mount Vernon Water CompanyIL0810010Mt Vernon5,483<MRL<MRL0Other PFAS detected
Northern Illinois University-DekalbIL0375500Dekalb6,500<MRL<MRL0No PFAS detected
NorthfieldIL0312100Northfield5,751<MRL<MRL0No PFAS detected
NorthlakeIL0314710North Lake12,840<MRL<MRL0No PFAS detected
Northshore Univ GlenbrookIL3157487Glenview3,200<MRL<MRL0No PFAS detected
Northshore University EvanstonIL3158048Chicago6,300<MRL<MRL0No PFAS detected
O FallonIL1631100O'Fallon46,603<MRL<MRL0Other PFAS detected
Oak BrookIL0430700Oak Brook9,400<MRL<MRL0No PFAS detected
Oak ForestIL0312190Oak Forest27,478<MRL<MRL0Other PFAS detected
Oak LawnIL0312220Oak Lawn58,362<MRL<MRL0No PFAS detected
Oak ParkIL0312250Oak Park54,583<MRL<MRL0No PFAS detected
OglesbyIL0990700Oglesby4,500<MRL<MRL0No PFAS detected
OlneyIL1590200Olney8,877<MRL<MRL0No PFAS detected
Olympia FieldsIL0312280Olympia Fields4,922<MRL<MRL0No PFAS detected
OregonIL1410400Oregon3,449<MRL<MRL0No PFAS detected
Orland ParkIL0312310Orland Park58,020<MRL<MRL0No PFAS detected
OswegoIL0930150Oswego38,169<MRL<MRL0No PFAS detected
OttawaIL0990800Ottawa18,097<MRL<MRL0No PFAS detected
PalatineIL0312340Palatine70,875<MRL<MRL0No PFAS detected
Palos HeightsIL0312370Palos Heights15,500<MRL<MRL0No PFAS detected
Palos HillsIL0312400Palos Hills18,530<MRL<MRL0No PFAS detected
Palos ParkIL0311000Palos Park4,873<MRL<MRL0No PFAS detected
PanaIL0210500Pana5,800<MRL<MRL0Other PFAS detected
ParisIL0450300Paris9,100<MRL<MRL0No PFAS detected
Park CityIL0971400Park City5,425<MRL<MRL0No PFAS detected
Park ForestIL0314740Park Forest21,687<MRL<MRL0No PFAS detected
Park RidgeIL0312460Park Ridge39,800<MRL<MRL0No PFAS detected
PaxtonIL0530250Paxton4,200<MRL<MRL0No PFAS detected
Peoria HeightsIL1434750Peoria Heights5,908<MRL<MRL0.658Hazard Index below its limit
PeruIL0990850Peru9,896<MRL<MRL0No PFAS detected
PetersburgIL1290200Petersburg4,725<MRL<MRL0No PFAS detected
Pike County Pwd 1IL1495000Pittsfield5,375<MRL<MRL0No PFAS detected
PinckneyvilleIL1450150Pinckneyville5,804<MRL<MRL0No PFAS detected
Pingree GroveIL0890160Pingree Grove10,365<MRL<MRL0No PFAS detected
PittsfieldIL1490750Pittsfield4,697<MRL<MRL0No PFAS detected
PlainfieldIL1970800Plainfield50,000<MRL<MRL0No PFAS detected
PlanoIL0930200Plano12,600<MRL<MRL0No PFAS detected
Pleasant Valley PwdIL1435470Peoria3,783<MRL<MRL1.4Hazard Index 1–3 × its limit
Pontoon Beach PwdIL1195300Granite City3,325<MRL<MRL0Other PFAS detected
Poplar Grove West-CountrysideIL0070350Poplar Grove790<MRL<MRL0No PFAS detected
PosenIL0312520Posen5,331<MRL<MRL0No PFAS detected
PrincetonIL0110850Princeton7,832<MRL<MRL0No PFAS detected
QuincyIL0010650Quincy42,000<MRL<MRL0.003Hazard Index below its limit
Raccoon Water CompanyIL1215100Centralia7,080<MRL<MRL0No PFAS detected
RantoulIL0190650Rantoul13,000<MRL<MRL0No PFAS detected
Red BudIL1570450Red Bud3,804<MRL<MRL0No PFAS detected
Richton ParkIL0312550Richton Park12,504<MRL<MRL0No PFAS detected
River ForestIL0312610River Forest11,717<MRL<MRL0No PFAS detected
River GroveIL0312640River Grove10,282<MRL<MRL0No PFAS detected
RiverdaleIL0312580Riverdale10,266<MRL<MRL0No PFAS detected
RiversideIL0312670Riverside9,298<MRL<MRL0No PFAS detected
RivertonIL1670950Riverton4,279<MRL<MRL0No PFAS detected
RiverwoodsIL0971450Vernon Hills3,618<MRL<MRL0No PFAS detected
RobbinsIL0312700Robbins5,415<MRL<MRL0No PFAS detected
Robinson-Palestine Water CommissionIL0335030Robinson11,331<MRL4.60.4PFOS 1–3 × its limit
RochelleIL1410500Rochelle9,446<MRL<MRL0No PFAS detected
RochesterIL1671000Rochester3,856<MRL<MRL0No PFAS detected
Rock FallsIL1950450Rock Falls8,620<MRL<MRL0Other PFAS detected
Rock IslandIL1610650Rock Island39,018<MRL<MRL0Other PFAS detected
Rock Island Arsenal, Us ArmyIL1615387Rock Island7,8004.6<MRL0PFOA 1–3 × its limit
RockfordIL2010300Rockford147,051<MRL<MRL0.66Hazard Index below its limit
RocktonIL2010350Rockton7,863<MRL<MRL1.2Hazard Index 1–3 × its limit
Rolling MeadowsIL0312730Rolling Meadows23,329<MRL<MRL0No PFAS detected
RomeovilleIL1970900Romeoville50,458<MRL<MRL0Other PFAS detected
RoselleIL0434820Roselle22,897<MRL<MRL0No PFAS detected
RosemontIL0312760Rosemont3,952<MRL<MRL0No PFAS detected
Round LakeIL0971500Round Lake18,430<MRL<MRL0No PFAS detected
Round Lake BeachIL0971550Round Lake Beach27,200<MRL<MRL0No PFAS detected
Round Lake ParkIL0971600Round Lake Beach4,900<MRL<MRL0No PFAS detected
SalemIL1210450Salem7,905<MRL<MRL0No PFAS detected
Saline Valley Conservancy DistrictIL1655300Eldorado3,921<MRL<MRL0No PFAS detected
SandwichIL0374850Sandwich7,156<MRL<MRL0No PFAS detected
Sangamon Valley PwdIL0195150Mahomet5,300<MRL<MRL0No PFAS detected
Sauk VillageIL0312790Sauk Village9,921<MRL<MRL0Other PFAS detected
SchaumburgIL0314890Schaumburg75,750<MRL<MRL0No PFAS detected
Schiller ParkIL0312850Schiller Park11,709<MRL<MRL0No PFAS detected
Shady Oaks MhpIL0635225Chicago912<MRL<MRL0No PFAS detected
ShelbyvilleIL1730300Shelbyville5,600<MRL<MRL0No PFAS detected
Sherrard Jr/Sr High SchoolIL3090290Milan800<MRL<MRL0No PFAS detected
ShorewoodIL1975080Shorewood18,645<MRL<MRL0Other PFAS detected
SilvisIL1610700Silvis7,473<MRL<MRL0No PFAS detected
SkokieIL0312880Skokie66,422<MRL<MRL0No PFAS detected
South Chicago HeightsIL0312940South Chicago Heights3,924<MRL<MRL0No PFAS detected
South ElginIL0890800South Elgin23,6485.7<MRL0.005PFOA 1–3 × its limit
South Highway PwdIL0775400Makanda4,972<MRL<MRL0No PFAS detected
South HollandIL0312970South Holland22,000<MRL<MRL0Other PFAS detected
South JacksonvilleIL1370400South Jacksonville3,501<MRL<MRL0Other PFAS detected
South Stickny SdIL0317370Burbank30,000<MRL<MRL0No PFAS detected
Southeast Regional Water FacilityIL0430060Darien6,940<MRL<MRL0No PFAS detected
Southern Il University-EdwardsvilleIL1195550Edwardsville2,817<MRL<MRL0.002Hazard Index below its limit
SpartaIL1570600Sparta4,395<MRL<MRL0Other PFAS detected
Spring ValleyIL0111000Spring Valley5,582<MRL<MRL0No PFAS detected
SpringfieldIL1671200Springfield117,444<MRL<MRL0Other PFAS detected
St CharlesIL0894830St. Charles33,081<MRL<MRL0.003Hazard Index below its limit
StauntonIL1171050Staunton5,756<MRL<MRL0Other PFAS detected
StegerIL0314860Manteno9,700<MRL<MRL0No PFAS detected
StickneyIL0313000Stickney6,902<MRL<MRL0No PFAS detected
Stone ParkIL0313030West Chicago4,576<MRL<MRL0No PFAS detected
StreamwoodIL0313060Streamwood38,360<MRL<MRL0No PFAS detected
Sugar GroveIL0890850Sugar Grove11,243<MRL<MRL0.8Hazard Index below its limit
SullivanIL1390300Sullivan4,729<MRL<MRL0No PFAS detected
SummitIL0310060Summit11,161<MRL<MRL0Other PFAS detected
SycamoreIL0370550Sycamore18,500<MRL<MRL0No PFAS detected
TaylorvilleIL0210600Taylorville12,806<MRL<MRL0No PFAS detected
Tinley ParkIL0314910Tinley Park56,703<MRL<MRL0No PFAS detected
Tritownship Water DistrictIL1190080Trenton3,470<MRL<MRL0No PFAS detected
TroyIL1191000Troy16,962<MRL<MRL0.002Hazard Index below its limit
TuscolaIL0415030Tuscola4,875<MRL<MRL0No PFAS detected
U Of I Chicago Medical CenterIL3155606Chicago5,000<MRL<MRL0No PFAS detected
U Of I-ChampaignIL0195500Champaign13,000<MRL<MRL0No PFAS detected
ValmeyerIL1330250Valmeyer1,233<MRL<MRL0No PFAS detected
VandaliaIL0510350Vandalia7,616<MRL<MRL0No PFAS detected
Vandalia Correctional CenterIL0515500Vandalia700<MRL<MRL0No PFAS detected
Vernon Hills - Lake Co PwIL0971750Libertyville33,207<MRL<MRL0No PFAS detected
Villa ParkIL0430800Villa Park22,263<MRL<MRL0No PFAS detected
VirdenIL1171100Virden3,274<MRL<MRL0No PFAS detected
VoloIL0971770Volo6,629<MRL<MRL0No PFAS detected
WarrenvilleIL0430833Warrenville12,350<MRL<MRL0No PFAS detected
Wasco SdIL0890110Wasco4,000<MRL<MRL0No PFAS detected
WashingtonIL1790750Washington14,793<MRL<MRL0No PFAS detected
Washington County Water CompanyIL1895600Nashville12,040<MRL<MRL0Other PFAS detected
WaterlooIL1330300Waterloo10,190<MRL<MRL0Other PFAS detected
WatsekaIL0750900Watseka4,767<MRL<MRL0No PFAS detected
WaucondaIL0971850Wauconda15,349<MRL<MRL0No PFAS detected
WaukeganIL0971900Waukegan87,149<MRL<MRL0No PFAS detected
Wee-Ma-Tuk Water DistrictIL0570040Cuba863<MRL<MRL0Other PFAS detected
West ChicagoIL0430900West Chicago25,166<MRL<MRL0No PFAS detected
West DundeeIL0890950West Dundee7,845<MRL<MRL0No PFAS detected
West FrankfortIL0550700West Frankfort8,650<MRL<MRL0No PFAS detected
West Liberty-Dundas Water DistrictIL1595050Dundas563<MRL<MRL0No PFAS detected
WestchesterIL0313150Westchester16,241<MRL<MRL0No PFAS detected
Western Illinois UniversityIL1095510Macomb8,000<MRL<MRL0No PFAS detected
Western SpringsIL0313180Western Springs13,629<MRL<MRL0No PFAS detected
WestmontIL0430950Westmont24,161<MRL<MRL0No PFAS detected
WestvilleIL1830950Westville3,917<MRL<MRL0No PFAS detected
WheatonIL0431050Wheaton53,970<MRL<MRL0No PFAS detected
WheelingIL0314970Wheeling39,725<MRL<MRL0No PFAS detected
Wildwood Subdivision - Lake Co PwIL0977350Libertyville14,073<MRL<MRL0No PFAS detected
WilliamsvilleIL1671300Williamsville6,198<MRL<MRL0No PFAS detected
Willow Lake Estates MhpIL0894400Elgin920<MRL<MRL0Other PFAS detected
WillowbrookIL0431100Willowbrook9,000<MRL<MRL0No PFAS detected
WilmetteIL0313300Wilmette27,650<MRL<MRL0No PFAS detected
WilmingtonIL1971100Wilmington5,700<MRL<MRL0.002Hazard Index below its limit
WinfieldIL0431150Winfield9,835<MRL<MRL0No PFAS detected
WinnetkaIL0313330Winnetka12,475<MRL<MRL0No PFAS detected
Winthrop HarborIL0971950Winthrop Harbor6,565<MRL<MRL0No PFAS detected
Wonder LakeIL1115750Wonder Lake3,870<MRL<MRL0No PFAS detected
Wood DaleIL0431200Wood Dale14,012<MRL<MRL0No PFAS detected
Wood RiverIL1191150Wood River10,464<MRL4.10PFOS 1–3 × its limit
WoodhavenIL1035100Sublette4,100<MRL<MRL0No PFAS detected
WoodlawnIL0810450Woodlawn3,587<MRL<MRL0Other PFAS detected
WoodridgeIL0431250Woodridge33,566<MRL<MRL0No PFAS detected
WoodstockIL1110950Woodstock25,630<MRL<MRL0No PFAS detected
WorthIL0313360Worth10,970<MRL<MRL0No PFAS detected
XeniaIL0250300Xenia542<MRL<MRL0No PFAS detected
YorkvilleIL0930250Yorkville23,000<MRL<MRL0No PFAS detected
ZionIL0972000Zion24,442<MRL<MRL0No PFAS detected

Not tested under UCMR 5 (1,720)

UCMR 5 required monitoring by systems serving 3,300 or more people and by a representative sample of smaller systems. The systems below have no UCMR 5 results in EPA's data. Not tested is not the same as not detected: the absence of results says nothing about PFAS in their water.

SystemPWSIDTypeCityPopulationCounties
325 S Route 31 LlcIL3029389NTNCWSWhite Plains500Kendall County
3M Chemical Operations LlcIL3049031NTNCWSCordova300Rock Island County
Acorn Acres MhpIL1590220CWSStevens Point52Richland County
Adams County Water District No 1IL0015150CWSPaloma800Adams County
Ads Valley View Landfill, IncIL3165696NTNCWSDecatur60Macon County
Ag View Fs Inc.IL3148270NTNCWSPrinceton25Bureau County
Air View MhpIL1615185CWSMoline200Rock Island County
Akin Water DistrictIL0555120CWSThompsonville2,368Franklin County
AlbanyIL1950050CWSAlbany846Whiteside County
AlbersIL0270050CWSAlbers1,231Clinton County
AlbionIL0470050CWSAlbion2,839Edwards County
Alden Long Grove Nursing CenterIL0971090CWSIngleside218Lake County
Alexian Brothers Medical CenterIL3163667NTNCWSElk Grove Village1,000Cook County
Alexian Brothers Medical Center & RehabIL3164707NTNCWSElk Grove Village1,000Cook County
AlexisIL1874000CWSAlexis836Mercer County, Warren County
AlhambraIL1190050CWSAlhambra755Madison County
AllendaleIL1850050CWSAllendale458Wabash County
Allendale AssociationIL0975139CWSLake Villa400Lake County
AllertonIL1834020CWSAllerton290Vermilion County
Allied Locke IndustriesIL3133744NTNCWSDixon350Lee County
Alloy Specialties (10500312)IL3158717NTNCWSRansome50Livingston County
Alloy Specialties (10500320)IL3162610NTNCWSRansome50Livingston County
AlmaIL1210050CWSAlma336Marion County
AlphaIL0730050CWSAlpha626Henry County
Alpine Village MhpIL0315125CWSPhoenix970Cook County
Alsey-Glasgow Water CommissionIL1715050CWSWinchester475Scott County
AltamontIL0490050CWSAltamont2,610Effingham County
Alto Pass Water DistrictIL1815150CWSAlto Pass1,015Union County
Alumitank IncIL3164350NTNCWSHarvard54McHenry County
AlvinIL1830050CWSAlvin270Vermilion County
AmboyIL1030050CWSAmboy2,500Lee County
Ameren-Cilco-Eastern Serv CtrIL3113589NTNCWSPeoria40Tazewell County
American Ad BagIL3155796NTNCWSWoodstock60McHenry County
American NickeloidIL3065458NTNCWSPeru200LaSalle County
American Precision ElctronicsIL3147728NTNCWSCarol Stream60DuPage County
AnchorIL1130050CWSAnchor160McLean County
AndoverIL0730100CWSAndover565Henry County
Anna-Jonesboro Water CommissionIL1815050CWSJonesboro28Union County
AnnawanIL0730150CWSPeru843Henry County
Apachi Day CampIL3152223NTNCWSSkokie300Lake County
Apple Creek Water CoopIL1370040CWSJacksonville968Morgan County
Apple RiverIL0850050CWSApple River347Jo Daviess County
Aqua Illinois-Crystal Clear Water Co.IL1115150CWSGlenview855McHenry County
Aqua Illinois-Eastwood ManorIL1115250CWSGlenview728McHenry County
Aqua Illinois-Fairhaven EstatesIL0975450CWSGlenview225Lake County
Aqua Illinois-Hawthorn WoodsIL0975040CWSGlenview3,065Lake County
Aqua Illinois-Highland EstatesIL0915220CWSGlenview171Kankakee County
Aqua Illinois-IndianolaIL1830500CWSGlenview219Vermilion County
Aqua Illinois-IvanhoeIL0970180CWSGlenview650Lake County
Aqua Illinois-Mchenry ShoresIL1115020CWSGlenview1,862McHenry County
Aqua Illinois-MoechervilleIL0895300CWSGlenview920Kane County
Aqua Illinois-Nordic WoodsIL1415330CWSGlenview425Ogle County
Aqua Illinois-NundaIL1115600CWSGlenview485McHenry County
Aqua Illinois-Oak BrookIL0430055CWSGlenview5,361Cook County, DuPage County
Aqua Illinois-Oak RunIL0955200CWSGlenview1,885Knox County
Aqua Illinois-OakviewIL1977210CWSGlenview312Will County
Aqua Illinois-PhiloIL0190600CWSGlenview1,378Champaign County
Aqua Illinois-RavennaIL0975070CWSGlenview267Lake County
Aqua Illinois-RockwellIL0970110CWSGlenview1,762Lake County
Aqua Illinois-Sheridan GroveIL2010080CWSGlenview100Winnebago County
Aqua Illinois-SkylineIL0915450CWSGlenview249Kankakee County
Aqua Illinois-Skyline (Northern)IL0895030CWSGlenview1,200Kane County
Aqua Illinois-SummerdaleIL0312050CWSGlenview145Cook County
Aqua Illinois-Sun River TerraceIL0910720CWSGlenview498Kankakee County
Aqua Illinois-Timber RidgeIL1970410CWSGlenview2,322Cook County
Aqua Illinois-Village WoodsIL1970060CWSGlenview800Will County
Aqua Illinois-WoodlawnIL1415050CWSGlenview290Ogle County
Aqua PlazaIL3086454NTNCWSNew Lenox50Will County
Arapaho Village MhpIL1635055CWSBelleville368St. Clair County
ArcolaIL0410050CWSArcola2,927Douglas County
Arcola/Tuscola Water Transmissioin MainIL0410020CWSTuscola50Champaign County, Douglas County
ArenzvilleIL0170050CWSArenzville419Cass County
Arenzville Rural Water CooperativeIL0170080CWSAlexander675Cass County
ArgentaIL1150050CWSArgenta900Macon County
ArlingtonIL0110050CWSArlington169Bureau County
ArmingtonIL1790050CWSArmington310Tazewell County
Armstrong Twp HsIL3005587NTNCWSArmstrong162Vermilion County
Armstrong-Ellis Grade SchoolIL3005579NTNCWSArmstrong97Vermilion County
Arntzen CorporationIL3159889NTNCWSWoodstock30McHenry County
ArrowsmithIL1130100CWSArrowsmith315McLean County
ArthurIL1394040CWSArthur2,300Douglas County, Moultrie County
AshlandIL0170100CWSAshland1,333Cass County
AshleyIL1890100CWSAshley565Washington County
AshmoreIL0290050CWSAshmore637Coles County
AshtonIL1030100CWSAshton967Lee County
AssumptionIL0210050CWSAssumption1,315Christian County
AstoriaIL0570050CWSAstoria1,375Fulton County, Mason County
AtkinsonIL0730200CWSPeru955Henry County
AtlantaIL1070050CWSAtlanta1,692Logan County
AtwoodIL0414060CWSAtwood1,155Douglas County, Piatt County
AugustaIL0670050CWSAugusta553Hancock County
Aurora Community Water AssnIL0895750CWSAurora150Kane County
Autumn Ridge EstatesIL1235125CWSLowell70Marshall County
Aux Sable Liquid Products IncIL3139097NTNCWSMorris50Grundy County
AvaIL0770050CWSAva1,053Jackson County
Avantara Long GroveIL0971110CWSLong Grove200Lake County
AvistonIL0270100CWSAviston2,545Clinton County
AvonIL0570100CWSBushnell920Fulton County
Azz GalvanizingIL3157990NTNCWSJoliet50Will County
BaldwinIL1570050CWSNashville547Randolph County
Balmoral ElemIL3082024NTNCWSCrete645Will County
Balmoral Heights SubdivisionIL1975180CWSBeecher400Will County
BannockburnIL0970100CWSBannockburn1,013Lake County
Banyan Treatment CenterIL3112367NTNCWSGilman30Iroquois County
Barbara Rose Elementary SchoolIL3147900NTNCWSSouth Barrington150Cook County
Barberry Acres MhpIL0915145CWSChebanse50Kankakee County
BardolphIL1090050CWSBardolph303McDonough County
Barrington Hills Cc Clbhse 1&3IL3015065NTNCWSBarrington300Lake County
Barrington Methodist Church (148742)IL3148742NTNCWSBarrington25Cook County
BarryIL1490050CWSBarry1,318Pike County
BartelsoIL0270150CWSBartelso643Clinton County
BatchtownIL0130050CWSBatchtown220Calhoun County
Battery BuildersIL3018556NTNCWSNaperville50Will County
Baxter And WoodmanIL3064378NTNCWSCrystal Lake25McHenry County
Baxter Health Care/HanlineIL3033050NTNCWSRound Lake2,500Lake County
Bay View Baptist ChurchIL3135368NTNCWSWashington425Tazewell County
Bayer Co - Waterman Research FacilityIL3152504NTNCWSWaterman50DeKalb County
Bayles Lake Lot Owners AssociationIL0755110CWSLoda645Iroquois County
BaylisIL1490100CWSBaylis180Pike County
Beach MhpIL0970010CWSDenver624Lake County
Beacon Paxton LlcIL0530260CWSPaxton55Ford County
Beason Chestnut PwdIL1075150CWSChestnut435Logan County
BeavervilleIL0750100CWSBeaverville450Iroquois County
BeckemeyerIL0270200CWSBeckemeyer913Clinton County
Bedford ParkIL0310120CWSBedford Park602Cook County
Beecher CityIL0490100CWSBeecher City500Effingham County
BelknapIL0870050CWSBelknap490Johnson County
Belle RiveIL0810050CWSBelle Rive1,930Jefferson County
BellflowerIL1130150CWSBellflower343McLean County
BellmontIL1850100CWSBellmont297Wabash County
BementIL1470050CWSBement1,661Piatt County
BenldIL1170050CWSBenld1,612Macoupin County
BensonIL2030050CWSBenson401Woodford County
Berean Baptist ChurchIL3047035NTNCWSRockford300Winnebago County
Bernard DivisionIL3083758NTNCWSBeecher75Will County
Berner Food And Beverage LlcIL3157297NTNCWSDakota200Stephenson County
BethanyIL1390100CWSBethany1,475Moultrie County
Big Muddy River CcIL0810020CWSIna1,771Jefferson County
BiggsvilleIL0710050CWSBiggsville273Henderson County
Biltmore C C Main BuildingIL3015057NTNCWSSpring Grove500Lake County
Birds Pinkstaff Water DistrictIL1015300CWSLawrencville1,018Lawrence County
Bishop HillIL0730250CWSBishop Hill113Henry County
Bismarck Community Water DistrictIL1835250CWSBismarck900Vermilion County
Bissell Village MhcIL1670120CWSSouthfield220Sangamon County
Blackhawk College East CampusIL0730130CWSGalva80Henry County
Blackhawk Estates LlcIL0317765CWSChicago1,238Cook County
Blairsville PwdIL1995350CWSHurst807Williamson County
Blessing HospitalIL3163121NTNCWSQuincy2,460Adams County
Blm Gw Mhp, LlcIL1130210CWSBloomington390McLean County
Bloomington Township Pwd West PhaseIL1130040CWSBloomington1,800McLean County
Bloomington Township Pwd-CrestwickeIL1135120CWSBloomington900McLean County
Blue MoundIL1150100CWSBlue Mound1,300Macon County
Bluff Lake Lodges, Inc.IL0970240CWSAntioch24Lake County
BlufordIL0810100CWSBluford1,880Jefferson County
Boley Tool And Machine WorksIL3139055NTNCWSPeoria100Tazewell County
Bone GapIL0470100CWSBone Gap209Edwards County
Bonfield Grade Schl/R LippoldIL3083170NTNCWSBonfield165Kankakee County
BonnieIL0810150CWSBonnie437Jefferson County
Bonnie Brae Forest Manor SndstIL1975140CWSLockport1,338Will County
Boody Community Water CompanyIL1150020CWSBoody232Macon County
Bostik, IncIL3062661NTNCWSRingwood200McHenry County
BowenIL0670200CWSBowen494Hancock County
BracevilleIL0630050CWSBraceville800Grundy County
BradfordIL1750050CWSBradford676Stark County
Bradley Heights SubdivisionIL2015050CWSRockford82Winnebago County
Braidwood Generating StationIL3081869NTNCWSBraceville800Will County
Brandt Industries Usa LtdIL3162313NTNCWSHudson125McLean County
Briarcrest Sbdv Homeowners AssociationIL0971060CWSSchaumburg207Lake County
BridgeportIL1010100CWSBridgeport2,572Lawrence County
BrimfieldIL1430150CWSBrimfield856Peoria County
Bristol Grade SchoolIL3029405NTNCWSYorkville325Kendall County
Broadview Estates East PeoriaIL1795365CWSEast Peoria89Tazewell County
Broadview-Westchester Joint Water AgencyIL0317580CWSBroadview1Cook County
BroadwellIL1070100CWSBroadwell169Logan County
BroctonIL0450050CWSBrocton288Edgar County
Brookfield-North Riverside Water Comm.IL0315130CWSBrookfield1Cook County
BrookportIL1270050CWSBrookport730Massac County
Broughton Water DistrictIL0650100CWSBroughton235Hamilton County
BrowningIL1690050CWSBrowning117Schuyler County
BrownstownIL0510100CWSBrownstown740Fayette County
Brownsville Water Project, IncIL1930020CWSCarmi800White County
BrusselsIL0130100CWSBrussels136Calhoun County
BryantIL0570200CWSCuba267Fulton County
Bryce/Ash Grove Ed CenterIL3005355NTNCWSMilford37Iroquois County
Buck Lake Estates SubdivisionIL0375100CWSSomonauk150DeKalb County
Buckhorn Ranch Estates MhpIL0310070CWSDenver702Cook County
BuckinghamIL0910250CWSBuckingham300Kankakee County
BucknerIL0550100CWSBuckner494Franklin County
Buenas Nuevas Community NfpIL3162131NTNCWSMontgomery100Kane County
Buffalo Hollow Farms Water AssocIL1430080CWSChillicothe45Peoria County
Buncombe Water DistrictIL0775420CWSCarbondale1,030Jackson County, Johnson County
Bunker HillIL1170100CWSBunker Hill1,760Macoupin County
Bureau JunctionIL0110150CWSPeru297Bureau County
BurlingtonIL0890150CWSBurlington535Kane County
Burnside PwdIL0875050CWSNew Burnside2,998Johnson County
Burnt PrairieIL1930010CWSBurnt Prairie486White County
Burt Estates MhcIL0630070CWSDenver543Grundy County
BushIL1990050CWSDesoto285Williamson County
Busy Bee Mhp #1IL1975195CWSLemont25Will County
ButlerIL1350050CWSButler253Montgomery County
Buysse SubdivisionIL0735000CWSCoal Valley380Henry County
CaberyIL0534200CWSCabery266Ford County, Kankakee County
Caledonia SchoolIL3091751NTNCWSBelvidere750Boone County
CalhounIL1590050CWSCalhoun172Richland County
CamargoIL0410100CWSCamargo750Douglas County
CambriaIL1990100CWSCambria1,727Williamson County
CambridgeIL0730300CWSCambridge2,086Henry County
Cambridge Courts MhpIL0971540CWSNorthbrook658Lake County
Camden-Littleton Water CommissionIL1695100CWSLittleton1,000Schuyler County
Camp GroveIL1235100CWSCamp Grove146Marshall County
Camp PointIL0010050CWSCamp Point1,190Adams County
Campbell HillIL0770100CWSCampbell Hill414Jackson County
CampusIL1050050CWSCampus149Livingston County
Candlelight Village MhpIL0315175CWSFarmington Hills420Cook County
Cantigny ParkIL3158444NTNCWSWheaton180DuPage County
CapronIL0070100CWSCapron1,343Boone County
Capron MhpIL0075105CWSWalworth90Boone County
Carbon CliffIL1610100CWSCarbon Cliff2,134Rock Island County
Carbon HillIL0630100CWSCarbon Hill370Grundy County
Career Center Of Southern IllinoisIL3164905NTNCWSWaterloo50Monroe County
CarlockIL1130250CWSCarlock562McLean County
Carlyle North Water Company, Inc.IL0270010CWSCarlyle1,850Clinton County
Carlyle Southwest PwdIL0275120CWSCentralia1,815Clinton County
Carmel Montessori AcademyIL3039735NTNCWSWarrenville40DuPage County
Carrier MillsIL1650050CWSCarrier Mills2,085Saline County
Carroll Heights Utilities CompanyIL0155200CWSSavanna80Carroll County
CarthageIL0670250CWSCarthage2,510Hancock County
Cass Rural Water DistrictIL0170010CWSAlexander403Cass County
Cat Mapleton /MapletonIL3113423NTNCWSMapleton600Peoria County
Cat MossvilleIL3113852NTNCWSMossville3,000Peoria County
Cat Tech CenterIL3117895NTNCWSChillicothe1,442Peoria County
Caterpillar Demonstration AreaIL3020008NTNCWSEdwards25Peoria County
Caterpillar Peoria Proving GrdIL3055871NTNCWSPeoria535Tazewell County
Caterpiller - Peoria Proving GroundsIL3161992NTNCWSPeoria31Tazewell County
CatlinIL1830150CWSCatlin2,380Vermilion County
Catty CorporationIL3141267NTNCWSHarvard49McHenry County
Cave-In-RockIL0690050CWSCave-In-Rock228Hardin County
Cbre West PlazaIL3147801NTNCWSNorthbrook600Cook County
Cci ManufacturingIL3161240NTNCWSLemont57Cook County
Cedar Brook Estates SubdivisionIL1615170CWSEast Moline450Rock Island County
Cedar Point Water CompanyIL0995040CWSHennepin266LaSalle County
CedarvilleIL1770050CWSCedarville663Stephenson County
Central Alexander Cnty PwdIL0035100CWSOlive Branch1,763Alexander County
Central High SchoolIL3126417NTNCWSGeneva1,001Kane County
Central Lake County JawaIL0971070CWSLake Bluff0Lake County
Central Macoupin County RwdIL1170040CWSCarlinville1,883Macoupin County
Central Middle SchoolIL3067538NTNCWSBurlington750Kane County
Central Stickney SdIL0315570CWSBurbank2,400Cook County
Centralia Correctional SiteIL0275600CWSCentralia1,397Clinton County
Cerro GordoIL1470100CWSCerro Gordo1,350Piatt County
ChadwickIL0150050CWSChadwick523Carroll County
Chain-O-Lakes MhpIL0975165CWSGrayslake84Lake County
Chana Education CenterIL3138206NTNCWSChana75Ogle County
ChandlervilleIL0170200CWSChandlerville838Cass County
Channahon EastIL1970070CWSChannahon630Will County
ChapinIL1370050CWSChapin658Morgan County
ChatsworthIL1050100CWSChatsworth1,200Livingston County
ChebanseIL0754240CWSChebanse1,044Iroquois County, Kankakee County
ChenoaIL1130300CWSChenoa1,800McLean County
CherryIL0110200CWSPeru490Bureau County
Cherrydale SubdivisionIL1615120CWSMilan63Rock Island County
ChesterfieldIL1170200CWSChesterfield184Macoupin County
Chicago Autism AcademyIL3162354NTNCWSFrankfort74Will County
Chigakwa Park EstatesIL1615140CWSIllinois City53Rock Island County
Children Of PromiseIL3151365NTNCWSMillstadt50St. Clair County
Choate MhcIL1815500CWSAnna533Union County
ChrismanIL0450100CWSChrisman1,273Edgar County
Christ Mission Lutheran ChurchIL3109900NTNCWSManhattan150Will County
ChristopherIL0550150CWSChristopher3,072Franklin County
Chs AnnawanIL3152629NTNCWSAnnawan50Henry County
Ciel Senior LivingIL0971700CWSVernon Hills225Lake County
CiscoIL1470150CWSClinton242Piatt County
CisneIL1910050CWSCisne634Wayne County
Cissna ParkIL0750200CWSCissna Park846Iroquois County
Citgo Petroleum CorporationIL3021543NTNCWSLemont500Will County
Citgo Refinery North WellIL3149559NTNCWSLemont200Will County
ClaremontIL1590100CWSClaremont190Richland County
Clarks MhpIL2015425CWSRockford90Winnebago County
Clay CityIL0250050CWSClay City957Clay County
Clay County Water IncIL0250020CWSFlora2,015Clay County
ClaytonIL0010100CWSClayton709Adams County
Clayton Work CampIL0010150CWSMt. Sterling83Adams County
Clayton-Camp Point Water CommissionIL0015200CWSCamp Point2,470Adams County
CliftonIL0750250CWSClifton1,500Iroquois County
Clifton Central High SchoolIL3059162NTNCWSAshkum875Iroquois County
Clinton County East PwdIL0275150CWSCentralia1,950Clinton County
Clover Leaf Village MhpIL1610160CWSMoline732Rock Island County
CobdenIL1810150CWSCobden1,267Union County
CoffeenIL1350150CWSAviston647Montgomery County
Cog Hill Country ClubIL3088518NTNCWSLemont340Cook County
ColchesterIL1090200CWSColchester1,395McDonough County
ColfaxIL1130350CWSColfax989McLean County
College View SubdivisionIL1975400CWSLockport570Will County
Colona EastIL0730400CWSMoline2,501Henry County
Colona Park Llc - Formerly Kershaw MhpIL0735345CWSRockford250Henry County
Colona WestIL0730550CWSMoline2,640Henry County
Colonial Meadows Water CompanyIL1135100CWSBloomington193McLean County
ColpIL1990200CWSColp506Williamson County
Commonwealth Edison CompanyIL3006882NTNCWSOakbrook Terrace35DeKalb County
ComptonIL1030150CWSCompton279Lee County
ComwellIL3000570NTNCWSRed Bud35Randolph County
ConagraIL3154047NTNCWSHenning200Vermilion County
ConcordIL1370100CWSConcord295Morgan County
CongervilleIL2030100CWSCongerville497Woodford County
Constellation Byron Generating StationIL3093112NTNCWSByron600Ogle County
Constellation Clinton Power StationIL3112201NTNCWSClinton515De Witt County
Constellation Dresden StationIL3083196NTNCWSMorris811Grundy County
Constellation Energy Generation LlcIL3110833NTNCWSCordova950Rock Island County
Constellation Services & Training CenterIL3103028NTNCWSWilmington550Will County
Constellation/Lasalle Cnty Gen StationIL3093054NTNCWSMarseilles1,000LaSalle County
Cooks Mills Water AssociationIL0295200CWSMattoon720Coles County
CooksvilleIL1130400CWSLexington157McLean County
CordovaIL1610150CWSCordova640Rock Island County
Core Fx IngredientsIL3163875NTNCWSOrangeville45Stephenson County
CornellIL1050150CWSCornell500Livingston County
Cornerstone Christian AcademyIL3147652NTNCWSBloomington475McLean County
Cortland Corners MhpIL0375125CWSAurora205DeKalb County
Cottonwood Cove MhpIL1670200CWSSpeld358Sangamon County
CoultervilleIL1570150CWSCoulterville1,052Randolph County
Country Acres Mhp (La Salle County)IL0995365CWSDenver222LaSalle County
Country Acres Mhp (Whiteside County)IL1955135CWSRock Falls232Whiteside County
Country Club Estates SubdivisionIL0735700CWSKewanee63Henry County
Country Estates SubdivisionIL0735050CWSGeneseo188Henry County
Country Hills Wtr, Inc.IL1190030CWSHighland166Madison County
Country Lane MhpIL1135385CWSDowns50McLean County
Country View Estates SubdivisionIL1415220CWSLindenwood125Ogle County
Country View Ests MhpIL0195625CWSUrbana100Champaign County
Country View MhcIL0050400CWSPierron173Bond County
Countryside Estates MhpIL0995185CWSWheaton158LaSalle County
Countryside Lake Subdivision -Lake Co PwIL0975200CWSLibertyville1,287Lake County
Countryside Mobile Home Estates MhpIL0915265CWSBloomfield Hills200Kankakee County
Countryside Private SchoolIL3149252NTNCWSDanvers44Woodford County
Countryside SchoolIL3084715NTNCWSBarrington225Cook County
CowdenIL1730050CWSCowden534Shelby County
Coyne Center CoopIL1615150CWSMilan150Rock Island County
Crab Orchard EstatesIL0775160CWSCarbondale238Jackson County
Crab Orchard RefugeIL1997037CWSMarion25Williamson County
CrainvilleIL1990250CWSCrainville1,711Williamson County
Creal SpringsIL1990300CWSCreal Springs683Williamson County
Crescent CityIL0750300CWSCrescent City650Iroquois County
Crest Foods Mixing DeptIL3150433NTNCWSAshton60Lee County
Crest Foods Production AreaIL3150441NTNCWSAshton120Lee County
CrestonIL1410150CWSCreston627Ogle County
Criswell Court MhpIL1975105CWSJoliet94Will County
Croppers 1St 4Th And 5Th AdditionIL1615250CWSMilan495Rock Island County
Cropsey Mutual Water AssociationIL1135150CWSLincoln65McLean County
Cross Lutheran SchoolIL3029298NTNCWSYorkville140Kendall County
Crossroads MhpIL1450260CWSMather53Perry County
CrossvilleIL1930150CWSCrossville1,091White County
Crystal Lake Chrysler Jeep Dodge RamIL3153239NTNCWSCrystal Lake47McHenry County
Crystal Lake MontessoriIL3057232NTNCWSWoodstock200McHenry County
CubaIL0570300CWSCuba1,232Fulton County
CullomIL1050200CWSCullom563Livingston County
CutlerIL1450050CWSCutler463Perry County
DahlgrenIL0650150CWSDahlgren859Hamilton County
DakotaIL1770100CWSDakota500Stephenson County
Dallas CityIL0674300CWSDallas City788Hancock County, Henderson County
Dalton CityIL1390150CWSDalton City454Moultrie County
DalzellIL0110250CWSPeru663Bureau County
DamiansvilleIL0275200CWSDamiansville602Clinton County
DanforthIL0750350CWSDanforth550Iroquois County
DanversIL1130450CWSDanvers1,089McLean County
DavisIL1770150CWSDavis589Stephenson County
Davis JunctionIL1410030CWSDavis Junction2,344Ogle County
DawsonIL1670400CWSDawson2,375Sangamon County
Dayspring Bible CollegeIL0977189CWSLake Zurich30Lake County
Ddp Specialty Electronic Materials UsIL3081950NTNCWSChannahon100Will County
De LandIL1470200CWSWestville446Piatt County
De PueIL0110300CWSDepue1,838Bureau County
De SotoIL0770200CWSDesoto1,910Jackson County
De WittIL0390100CWSClinton175De Witt County
Deans Illinois DairiesIL3152850NTNCWSRockford110Winnebago County
Decatur Correctional CenterIL1150140CWSDecatur341Macon County
Decatur Mhp, LlcIL1150160CWSCedaredge500Macon County
Deer CreekIL1794320CWSDeer Creek647Tazewell County
Deer Park SchoolIL3109009NTNCWSOttawa155LaSalle County
Deerwood EstatesIL1670240CWSIndianola176Sangamon County
Deland WeldonIL3005496NTNCWSDeland280Piatt County
DelavanIL1790150CWSDelavan1,743Tazewell County
Deluxe Lake Estates MhpIL1430070CWSFarmington325Peoria County
Des Plaines MhpIL0317775CWSDesplaines405Cook County
Devansoy IncIL3162735NTNCWSRock City32Stephenson County
Devils Kitchen Water DistrictIL1995160CWSCarbondale1,428Williamson County
Dhs Rushville Treatment And DetentionIL1690020CWSRushville565Schuyler County
DiamondIL0630250CWSDiamond2,508Grundy County
Diamond Lake MhpIL0975185CWSMundelein198Lake County
Diamond Lake SchoolIL3086868NTNCWSMundelein350Lake County
DieterichIL0490150CWSDieterich900Effingham County
Dimmick Consol Comm School 175IL3096115NTNCWSLa Salle120LaSalle County
Diocese Of RockfordIL3112177NTNCWSRockford90Winnebago County
DivernonIL1670450CWSDivernon1,100Sangamon County
Diversified CpcIL3161067NTNCWSChannahon25Will County
Dix-Kell Water CommssionIL0815100CWSDix1,972Jefferson County
Dixie Estates SubdivisionIL1975520CWSBeecher180Will County
Dixon Correctional CenterIL1035500CWSDixon1,038Lee County, Ogle County
Dolan Education CenterIL3161778NTNCWSDurand50Winnebago County
DongolaIL1810200CWSDongola736Union County
DonnellsonIL0054360CWSDonnellson216Bond County, Montgomery County
Donny Brook Estates SubdivisionIL0375150CWSDekalb30DeKalb County
DonovanIL0750400CWSDonovan279Iroquois County
Donovan Grade SchoolIL3005298NTNCWSDonovan231Iroquois County
DorchesterIL1170250CWSDorchester540Macoupin County
DowellIL0770250CWSDowell1,188Jackson County, Perry County
DownsIL1130500CWSDowns1,201McLean County
Du Page Water CommissionIL0435400CWSElmhurst1Cook County, DuPage County
DuboisIL1890150CWSNashville200Washington County
Duck Lake Well Owners AssociationIL0975380CWSIngleside141Lake County
Dunfermline-St David Water CommissionIL0575150CWSSt David850Fulton County
DunlapIL1430250CWSDunlap1,603Peoria County
Dupont PioneerIL3159897NTNCWSUtica25LaSalle County
Dura Bar Metal ServicesIL3159582NTNCWSWoodstock35McHenry County
DurandIL2010100CWSDurand1,427Winnebago County
Durham School ServicesIL3155382NTNCWSPlainfield80Will County
EagarvilleIL1170300CWSEagarville127Macoupin County
EarlvilleIL0990150CWSEarlville1,613LaSalle County
East 30 MhpIL1190400CWSCrofton175Madison County
East DubuqueIL0850100CWSEast Dubuque1,565Jo Daviess County
East Dubuque Nitrogen FertilizersIL3090753NTNCWSEast Dubuque165Jo Daviess County
East DundeeIL0890250CWSEast Dundee3,115Kane County
East End Water AssociationIL1610140CWSTaylor Ridge48Rock Island County
East GalesburgIL0950150CWSEast Galesburg860Knox County
East Hazel CrestIL0310750CWSEast Hazel Crest1,500Cook County
East Lawn Water AssociationIL1615100CWSEast Moline160Rock Island County
East Lynn Community Water SystemIL1835200CWSEast Lynn112Vermilion County
East Moline Correctional CenterIL1617120CWSEast Moline500Rock Island County
East Moreland Wtr Service AssnIL1975600CWSJoliet1,320Will County
East Side MhpIL0195825CWSRantoul79Champaign County
EastonIL1250100CWSEaston325Mason County
Easy Breeze Manufactured Home ParkIL0495400CWSSanford108Effingham County
Eaton PwdIL0335100CWSAnnapolis1,655Crawford County
Eberts 3Rd AdditionIL1615330CWSMilan99Rock Island County
Ed Etnyre And CompanyIL3121970NTNCWSOregon400Ogle County
Edelstein Water CoopIL1435150CWSEast Peoria113Peoria County
EdgewoodIL0490200CWSEdgewood440Effingham County
Edgewood Mobile Home Court (Mhc)IL1670140CWSOviedo92Sangamon County
Edgington Water DistrictIL1615550CWSTaylor Ridge391Rock Island County
EdinburgIL0210150CWSEdinburg1,068Christian County
Edp RenewablesIL3152603NTNCWSEllsworth50McLean County
Edward Hines Jr V A HospitalIL0315617CWSHines60Cook County
Egyptian Trail Water CorpIL0415150CWSArthur64Douglas County
Egyptian Water CompanyIL1570010CWSNashville2,543Randolph County
Ehlers MhpIL0195645CWSUrbana112Champaign County
Ej Water-CoaltonIL1350100CWSDieterich317Montgomery County
Ej Water-DeweyIL0195200CWSDieterich350Champaign County
Ej Water-McwcIL1350020CWSDieterich2,083Montgomery County
Ej Water-MontroseIL0490350CWSDieterich201Effingham County
Ej Water-NianticIL1150400CWSDieterich648Macon County
Ej Water-SangchrisIL1670230CWSDieterich1,025Sangamon County
Ej Water-WatsonIL0490500CWSDieterich754Effingham County
Ej Water-WittIL1350850CWSDieterich785Montgomery County
El PasoIL2030150CWSEl Paso2,900Woodford County
EldredIL0610100CWSEldred164Greene County
ElizabethIL0850150CWSElizabeth802Carroll County, Jo Daviess County
ElizabethtownIL0690100CWSElizabethtown220Hardin County
ElkhartIL1070150CWSElkhart565Logan County
ElkvilleIL0770300CWSElkville1,068Jackson County
Ellery Water CorpIL0470010CWSAlbion2,380Edwards County
ElliottIL0530050CWSElliott269Ford County
Ellis GroveIL1570200CWSEllis Grove403Randolph County
EllsworthIL1130550CWSEllsworth225McLean County
Elm Oak Mutual Water SystemIL0975736CWSLake Forest50Lake County
ElmwoodIL1430300CWSElmwood2,058Peoria County
ElvastonIL0670010CWSElvaston165Hancock County
Elverado Water DistrictIL0770010CWSVergennes763Jackson County
ElwoodIL1970350CWSElwood2,229Will County
Embrace DaycareIL3138370NTNCWSEdwards25Peoria County
EmdenIL1070200CWSEmden467Logan County
EmingtonIL1050300CWSEmington101Livingston County
Emmons Grade SchoolIL3102939NTNCWSAntioch450Lake County
Enchanted VillageIL1195160CWSFarmington Hills720Madison County
EnergyIL1990350CWSEnergy984Williamson County
EnfieldIL1930200CWSEnfield1,064White County
EqualityIL0590050CWSEquality652Gallatin County
Equistar Chemicals LpIL3034314NTNCWSMorris600Grundy County
ErieIL1950200CWSErie1,479Whiteside County
Eswood School Dist 269IL3130971NTNCWSLindenwood175Ogle County
EvansvilleIL1570250CWSEvansville660Randolph County
Everest AcademyIL3155374NTNCWSLemont25Cook County
Evergreen Village SubdivisionIL1615310CWSEast Moline56Rock Island County
Evergreen Wildwood Mobile Home ParkIL0775410CWSPittsburgh230Jackson County
Evonik CorporationIL3000455NTNCWSMapleton150Peoria County
Ewing-Ina Water CommissionIL0555350CWSWhittington2,393Franklin County, Jefferson County
Excel Foundry & MachineIL3055483NTNCWSPekin165Tazewell County
Exeter-Merritt Water CoopIL1710010CWSWinchester820Scott County
Expressway MhpIL0015545CWSQuincy98Adams County
Exxon Mobil Oil RefineryIL3081943NTNCWSJoliet1,450Will County
Fairfield Rural Waterworks--BoylestonIL1915050CWSFairfield948Wayne County
Fairfield Rural Waterworks--JasperIL1910020CWSFairfield1,578Wayne County
Fairfield Rural Waterworks--New HopeIL1915100CWSFairfield1,285Wayne County
FairmountIL1830250CWSFairmount690Vermilion County
FairviewIL0570450CWSCuba588Fulton County
Faith Christian Elementary SchoolIL3161794NTNCWSDixon90Ogle County
Faith Christian School / High SchoolIL3119537NTNCWSDixon65Ogle County
Falcon FarmsIL1617635CWSPort Byron350Rock Island County
FarinaIL0510150CWSFarina540Fayette County
Farmer CityIL0390150CWSFarmer City1,811De Witt County
FarmersvilleIL1350200CWSFarmersville784Montgomery County
Fawn Hills SubdivisionIL1435170CWSChillicothe183Peoria County
FayettevilleIL1630550CWSSwansea490St. Clair County
Fca Manufacturing CompanyIL3137158NTNCWSKewanee45Henry County
Fci-MarionIL1995247CWSMarion1,544Williamson County
Ferges Water DistrictIL1995050CWSMarion1,185Williamson County
Ferrite InternationalIL3129015NTNCWSWaukegan60Lake County
Ferson Creek Elem Schl-Cusd 303IL3122598NTNCWSSt. Charles667Kane County
Fiber Tex-Non Woven SolutionsIL3139337NTNCWSIngleside26Lake County
FieldonIL0830150CWSFieldon186Jersey County
Fields Hill Improvement AssociationIL0995150CWSOttawa312LaSalle County
Fields Of Long GroveIL0971050CWSLong Grove267Lake County
FillmoreIL1350250CWSFillmore313Montgomery County
FindlayIL1730100CWSFindlay750Shelby County
First Student #12903IL3037705NTNCWSKnoxville160Will County
First Student Prairie View 20092IL3129684NTNCWSAntioch130Lake County
FithianIL1830300CWSFithian485Vermilion County
FlanaganIL1050400CWSFlanagan1,070Livingston County
Flat RockIL0330050CWSFlat Rock325Crawford County
Flower Garden AnnexIL3118646NTNCWSProspect Heights38Cook County
Flower Garden Day Care 3Rd BldIL3147736NTNCWSProspect Heights40Cook County
Fmc Water CompanyIL1210020CWSOdin2,945Marion County
Focus HouseIL3136002NTNCWSRochelle50Ogle County
Ford HeightsIL0310720CWSFord Heights1,813Cook County
Forest CityIL1250010CWSGreen Valley222Mason County
Forest Lake Addition - Lake Co PwIL0975500CWSLibertyville225Lake County
Forest ViewIL0310930CWSForest View800Cook County
Forest View MhpIL2010030CWSLoves Park650Winnebago County
Forge At The LakeIL1190120CWSMetamore387Madison County
Forming America LtdIL3150102NTNCWSWest Chicago40DuPage County
ForrestIL1050450CWSForrest1,225Livingston County
Forrest Park MhpIL1670225CWSSpeld352Sangamon County
ForrestonIL1410200CWSForreston1,338Ogle County
Fountain Valley MhpIL0195945CWSRantoul375Champaign County
Four Seasons MhpIL0075185CWSProvo1,468Boone County
Four Star CampgroundIL0990060CWSMarseilles250LaSalle County
Fox Creek Farms Water CompanyIL1435750CWSBrimfield203Peoria County
Fox Lake Hills Subdivision - Lake Co PwIL0975550CWSLibertyville2,628Lake County
Fox Lawn Homeowners Water AssociationIL0935150CWSYorkville167Kendall County
Fox Metro Water Reclamation DistrictIL3155416NTNCWSOswego25Kendall County
Fox River ResortIL3000836NTNCWSOttawa70LaSalle County
Fox Valley Ymca & PreschoolIL3133538NTNCWSPlano300Kendall County
Franciscan Health Olympia FieldsIL3165845NTNCWSOlympia Fields1,050Cook County
Franciscan Sisters Of ChicagoIL0310110CWSLemont505Cook County
Franciscan Sisters Of The Sacred HeartIL3082818NTNCWSFrankfort120Will County
FranklinIL1370150CWSFranklin800Morgan County
Franklin GroveIL1030250CWSFranklin Grove896Lee County
Freeman SpurIL1994420CWSFreeman Spur373Williamson County
Fremont Elementary School K-2IL3137737NTNCWSMundelein800Lake County
Fremont Intermediate School 3-5IL3151944NTNCWSWaukegan450Lake County
Fremont School Dist 6-8IL3028647NTNCWSMundelein325Lake County
Frentress LakeIL0850010CWSEast Dubuque233Jo Daviess County
Fsh Water CommissionIL1635300CWSFreeburg313St. Clair County
Fyre Lake Water CompanyIL1315050CWSSherrard760Mercer County
Galapagos Charter SchoolIL3045757NTNCWSRockford80Winnebago County
GalatiaIL1650150CWSGalatia887Saline County
Gallatin-White Water DistrictIL0595100CWSNorris City1,370Gallatin County
GalvaIL0730450CWSGalva2,449Henry County
Garden Home SdIL0315620CWSGarden Homes1,472Cook County
Garden Street Improvement AssociationIL1975376CWSJoliet54Will County
GardnerIL0630400CWSGardner1,361Grundy County
GarrettIL0410010CWSAtwood198Douglas County
Gaslite Court MhcIL1670220CWSShiloh114Sangamon County
Gateway FoundationIL3108704NTNCWSLake Villa200Lake County
Gateway MhpIL1970020CWSFrankfort884Will County
Gateway Regional Water CompanyIL0270040CWSSandoval1Clinton County
Gavin Central ElementaryIL3002188NTNCWSIngleside560Lake County
Gavin South SchoolIL3002873NTNCWSIngleside325Lake County
Geneseo Child CareIL3121558NTNCWSGeneseo45Henry County
Geneseo Hickory Hills HoaIL0730080CWSGeneseo83Henry County
Geneseo Hills SubdivisionIL0735600CWSGeneseo500Henry County
German ValleyIL1770250CWSGerman Valley463Stephenson County
GermantownIL0270350CWSGermantown1,537Clinton County
Gfl Illinois LlcIL3165118NTNCWSSt Charles45Kane County
GiffordIL0190250CWSGifford911Champaign County
GilmanIL0750450CWSGilman1,793Iroquois County
GirardIL1170450CWSGirard1,885Macoupin County
GladstoneIL0710020CWSGladstone387Henderson County
Glen Eden Estates Homeowners AssociationIL0315650CWSNorwood Park Township312Cook County
Glen Ellyn Heights SubdivisionIL0435500CWSDarien1,931DuPage County
Glenbrook SdIL0315310CWSTechny822Cook County
Glenstone Sbdv HoaIL0970160CWSLong Grove65Lake County
Godley Public Water DistrictIL1970130CWSGodley566Grundy County, Will County
GolcondaIL1510100CWSGolconda630Pope County
GoldenIL0010250CWSGolden620Adams County
GolfIL0311080CWSGolf497Cook County
Good HopeIL1090250CWSGood Hope536McDonough County
Good Shepherd HospitalIL3130302NTNCWSBarrington1,290Lake County
GoodfieldIL2034450CWSGoodfield936Woodford County
GorevilleIL0870200CWSGoreville1,068Johnson County
GorhamIL0770350CWSGorham1,143Jackson County
Gpwd CenterIL3025338NTNCWSGodley50Will County
Grace Christian AcademyIL3076240NTNCWSKankakee400Kankakee County
Grace Lutheran/Sue FosdalIL3109660NTNCWSWoodstock100McHenry County
Graham Correctional SiteIL1355100CWSHillsboro2,155Macoupin County, Montgomery County
Grand RidgeIL0990200CWSGrand Ridge515LaSalle County
Grand TowerIL0770400CWSGrand Tower559Jackson County
Grand Valley Village MhpIL1670070CWSSpringfield912Sangamon County
GrandviewIL1670500CWSSpringfield1,405Sangamon County
GrantforkIL1190350CWSHighland1,766Madison County
GranvilleIL1550050CWSGranville1,359Putnam County
Grass Lake SchoolIL3019638NTNCWSAntioch300Lake County
GrayvilleIL1934460CWSGrayville1,613Edwards County, White County
Greater Quad City Auto AuctionIL3138982NTNCWSMilan340Rock Island County
Green Acres MhpIL1035165CWSGranite Bay170Lee County
Green Meadow Estates Of Rockford LlcIL2015495CWSKnoxville250Winnebago County
Green OaksIL0970040CWSGreen Oaks1,470Lake County
Green ValleyIL1790250CWSGreen Valley638Tazewell County
Greene County RwdIL0610020CWSCarrollton3,786Greene County
GreenfieldIL0610150CWSGreenfield1,097Greene County
GreenupIL0350050CWSGreenup1,513Cumberland County
GreenviewIL1290100CWSGreenview858Menard County
Greenview Estates MhpIL0070060CWSBelvidere710Boone County
Greenwood SchoolIL3001883NTNCWSWoodstock400McHenry County
Greenwood-Creek Nation Water CompanyIL0555200CWSMulkeytown2,530Franklin County
GridleyIL1130600CWSGridley1,411McLean County
GriggsvilleIL1490300CWSGriggsville1,097Pike County
Grove Medical CenterIL3130633NTNCWSChicago210Lake County
Groveland Township Water DistrictIL1795200CWSGroveland2,185Peoria County, Tazewell County
Grown RogueIL3163626NTNCWSDwight103Livingston County
H B FullerIL3155291NTNCWSMorris25Grundy County
Ha International LlcIL3091637NTNCWSOregon75Ogle County
HamelIL1190450CWSHamel1,087Madison County
HamiltonIL0670400CWSHamilton2,753Hancock County
HammondIL1470250CWSHammond478Piatt County
HamptonIL1610300CWSHampton1,863Rock Island County
HanafordIL0550250CWSLogan883Franklin County
Hanna CityIL1430400CWSHanna City1,253Peoria County
Harbor Lites-Pistakee Fshg ClIL1110011CWSChicago132McHenry County
Harbor Point Estates MhpIL0317010CWSNorthbrook1,064Cook County
Hardin County Water District No.1IL0695000CWSCave In Rock843Hardin County
Harding Grade SchoolIL3008342NTNCWSEarlville250LaSalle County
Hardinville Water CompanyIL0330020CWSRobinson3,403Crawford County
HarmonIL1030300CWSHarmon111Lee County
Harris Enterprises Of IlIL3158709NTNCWSBloomington25McLean County
HarristownIL1150210CWSDecatur1,320Macon County
HartfordIL1190500CWSHartford1,260Madison County
HartsburgIL1070250CWSHartsburg262Logan County
Harvard Hills Water CorporationIL1795450CWSWashington215Tazewell County
HarvelIL1354500CWSHarvel191Christian County, Montgomery County
Harvest Estates (Formerly Bills Mhp)IL0915165CWSDenver40Kankakee County
Hawthorn Estates SubdivisionIL0630030CWSMorris49Grundy County
Hazelwood 4Th AdditionIL0735350CWSGeneseo140Henry County
Hazelwood Heights SubdivisionIL0735220CWSGeneseo235Henry County
Hazelwood West SubdivisionIL0735250CWSGeneseo70Henry County
Heartland Private SchoolIL3155614NTNCWSWyomig42Stark County
Heartville PwdIL0495200CWSDieterich1,125Clay County, Effingham County
Heatherfield SubdivisionIL0635150CWSMorris90Grundy County
HebronIL1110300CWSHebron1,368McHenry County
HeckerIL1330150CWSHecker429Monroe County, St. Clair County
Heiden Gardens CondosIL0975238CWSLake Bluff217Lake County
HendersonIL0950250CWSHenderson375Knox County
Henderson PwdIL1350010CWSCarlinville2,045Montgomery County
Hennepin PwdIL1555100CWSHennepin750Putnam County
HenryIL1230050CWSHenry2,230Marshall County
Heritage EnvironmentalIL3132076NTNCWSLemont45Cook County
Heritage Of RantoulIL0190080CWSCrofton500Champaign County
HerrickIL1730150CWSHerrick358Shelby County
HerscherIL0910450CWSHerscher1,600Kankakee County
HettickIL1170500CWSHettick174Macoupin County
HeyworthIL1130650CWSChampaign2,853McLean County
Hickory Hills 2Nd AdditionIL1615450CWSTaylor Ridge35Rock Island County
Hickory-Kerton Wtr CoopIL1695200CWSRushville2,358Schuyler County
High Cliff EstatesIL1610410CWSDenver560Rock Island County
High Road SchoolIL3098053NTNCWSGarden Prairie131Boone County
Highland Park HospitalIL3163253NTNCWSChicago2,800Cook County, Lake County
Highland SubdivisionIL0895530CWSSt. Charles50Kane County
Highway 37 North PwdIL1995100CWSMarion1,068Williamson County
Hill City Water DistrictIL0555250CWSBenton543Franklin County
HillcrestIL1410250CWSHillcrest1,224Ogle County
Hillcrest Court 2Nd AdditionIL1615490CWSTaylor Ridge66Rock Island County
Hillcrest Court SubdivisionIL1615510CWSTaylor Ridge60Rock Island County
Hillcrest HomeIL0735329CWSPeru103Henry County
Hilldale Manor SubdivisionIL0975700CWSFox Lake414Lake County
Hillsdale Estates, LlcIL1615530CWSBeaufort163Rock Island County
Hillsdale PropertiesIL1615728CWSMoline60Rock Island County
Hillside Berkeley Water CommissionIL0315770CWSBellwood1Cook County
Hilltop MhpIL1130080CWSBloomington1,360McLean County
HillviewIL0610200CWSRoodhouse94Greene County
HinckleyIL0370200CWSHinckley2,006DeKalb County
Hinckley-Big Rock Middle SchoolIL3071415NTNCWSDeklab400Kane County
HindsboroIL0410200CWSOakland296Douglas County
Hobson Valley Water SystemIL0430040CWSDarien400DuPage County
HodgkinsIL0311260CWSHodgkins1,597Cook County
HoffmanIL0270400CWSPatoka452Clinton County
Hoffman Rural Water CompanyIL0275230CWSCarlyle1,015Clinton County
Hollands Grove Court SubdivisionIL1795300CWSEast Peoria40Tazewell County
HollowayvilleIL0110010CWSHollowayville36Bureau County
Holly Hock Hill MhpIL0975245CWSFlagstaff47Lake County
HomerIL0190300CWSHomer1,200Champaign County
Honeycutt Hill Mhp LlcIL1955225CWSMorrison75Whiteside County
HopedaleIL1790300CWSHopedale830Tazewell County
HopewellIL1235150CWSHopewell420Marshall County
Hopkins ParkIL0910040CWSHopkins Park579Kankakee County
Horizons Child CareIL3129536NTNCWSVandalia170Fayette County
Howard B Thomas Grade SchoolIL3135145NTNCWSGeneva575Kane County
HoyletonIL1890200CWSCentralia658Washington County
Hoyleton RwcIL1895400CWSCentralia1,020Clinton County, Washington County
Hoyleton-New MindenIL1895500CWSCentralia35Washington County
HudsonIL1130700CWSHudson1,847McLean County
HullIL1490350CWSHull435Pike County
HumboldtIL0290150CWSHumboldt361Coles County
HumeIL0450150CWSGeorgetown450Edgar County
HurstIL1990450CWSHurst782Williamson County
HutsonvilleIL0330100CWSHutsonville613Crawford County
IdentcoIL3135582NTNCWSWaukegan30Lake County
Ifh Finishing FacilityIL3166389NTNCWSRock Falls25Whiteside County
Ifh GroupIL3035436NTNCWSRock Falls75Whiteside County
Il American-Alpine HeightsIL1970030CWSGodfrey707Cook County
Il American-Apple CanyonIL0855150CWSGodfrey931Jo Daviess County
Il American-ArburyIL1975040CWSGodfrey1,225Will County
Il American-ArrowheadIL0435150CWSGodfrey1,581DuPage County
Il American-Bahl Water CompanyIL0855200CWSGodfrey700Jo Daviess County
Il American-BroadlandsIL0190050CWSGodfrey330Champaign County
Il American-CairoIL0035030CWSGodfrey1,821Alexander County
Il American-CamelotIL1975200CWSGodfrey777Will County
Il American-Cedar WaterIL0955150CWSGodfrey172Knox County
Il American-Central States DstIL1975210CWSGodfrey117Will County
Il American-Char-MarIL0975350CWSGodfrey186Lake County
Il American-Cherry HillIL1975280CWSGodfrey833Will County
Il American-Coventry CreekIL2015160CWSGodfrey270Winnebago County
Il American-Coventry HillIL2015150CWSGodfrey608Winnebago County
Il American-Del-MarIL0975370CWSGodfrey300Lake County
Il American-Dupage UtilityIL0430552CWSGodfrey6,613DuPage County
Il American-FarmingtonIL0570500CWSGodfrey2,448Fulton County, Peoria County
Il American-Ferson CreekIL0895800CWSGodfrey1,134Kane County
Il American-FisherIL0190150CWSGodfrey2,026Champaign County
Il American-GlasfordIL1430350CWSGodfrey1,193Peoria County
Il American-Harbor RidgeIL0975620CWSGodfrey1,064Lake County
Il American-HardinIL0130200CWSGodfrey839Calhoun County
Il American-Hardin CountyIL0690020CWSGodfrey1,373Gallatin County, Hardin County
Il American-Holiday HillsIL1115350CWSGodfrey868McHenry County
Il American-HollisIL0935200CWSGodfrey107Kendall County
Il American-KillarneyIL1115400CWSGodfrey1,232McHenry County
Il American-Lake MarianIL0895200CWSGodfrey1,022Kane County
Il American-Lake Water CompanyIL0310290CWSGodfrey0Cook County
Il American-Lake WildwoodIL1235200CWSGodfrey1,295Marshall County
Il American-LeonoreIL0990400CWSGodfrey111LaSalle County
Il American-Liberty Ridge EastIL0437500CWSGodfrey320DuPage County
Il American-LivingstonIL1190600CWSGodfrey825Madison County
Il American-Lombard HeightsIL0435700CWSGodfrey679DuPage County
Il American-Midwest PalosIL0317050CWSGodfrey126Cook County
Il American-MorelandIL0315910CWSGodfrey445Cook County
Il American-Mount PulaskiIL1070400CWSGodfrey1,506Logan County
Il American-Nettle CreekIL0630040CWSGodfrey317Grundy County
Il American-Northern HillIL1775050CWSGodfrey600Stephenson County
Il American-OakwoodIL1830600CWSGodfrey1,600Vermilion County
Il American-Port Barrington ShoresIL0971120CWSGodfrey67Lake County
Il American-RidgecrestIL0635100CWSGodfrey203Grundy County
Il American-River GrangeIL0895600CWSGodfrey62Kane County
Il American-RockvaleIL1415350CWSGodfrey298Ogle County
Il American-RollinsIL0895150CWSGodfrey231Kane County
Il American-RosiclareIL0690160CWSGodfrey1,233Hardin County
Il American-SauneminIL1050650CWSGodfrey456Livingston County
Il American-Terra CottaIL1110080CWSGodfrey681McHenry County
Il American-TolonoIL0191000CWSGodfrey3,604Champaign County
Il American-ValentineIL0977300CWSGodfrey252Lake County
Il American-Valley MarinaIL0935100CWSGodfrey1,102Kendall County
Il American-Villa GroveIL0410350CWSGodfrey2,467Douglas County
Il American-Walk Up WoodsIL1115800CWSGodfrey775McHenry County
Il American-Washington EstatesIL1797050CWSGodfrey1,143Tazewell County
Il American-WaycindenIL0317550CWSGodfrey1,934Cook County
Il American-WestlakeIL2010070CWSGodfrey1,493Winnebago County
Il American-WildwoodIL2015400CWSGodfrey490Winnebago County
Il Prairie Estate Sbdv Water AssociationIL0995300CWSMarseilles78LaSalle County
Il Veterans Home (Quincy)IL0015500CWSQuincy401Adams County
Il Veterans Home-MantenoIL0915930CWSManteno256Kankakee County
Il Youth Center St CharlesIL0895930CWSSt. Charles260Kane County
Ilcv Candle Mhp, LlcIL1610120CWSCedaredge340Rock Island County
Ildu Lepere Mhp, LlcIL1635080CWSCedaredge250St. Clair County
Ilg Greenhouse, LlcIL3165613NTNCWSYorkville,65Kendall County
Illinois CentralIL3113837NTNCWSNaperville230Lake County
Illinois City Elementary SchooIL3112904NTNCWSTaylor Ridge136Rock Island County
Illinois Railway Museum South WellIL3166447NTNCWSUnion150McHenry County
IlliopolisIL1670550CWSIlliopolis1,037Sangamon County
Ilog Oglesby Mhp, LlcIL0995750CWSPontiac88LaSalle County
Ilpo Redwood Mhp LlcIL1055040CWSPontiac300Livingston County
Ilur Liberty Commons Mhp LlcIL0195400CWSCrofton865Champaign County
Ilur Portfolio 5 - Trailside Mhp LlcIL0195380CWSCrofton62Champaign County
Ilur Portfolio 5 - Wilson Mhp LlcIL0195370CWSCrofton62Champaign County
Ilur Portfolio 5-Surbana Estates Mhp LlcIL0195390CWSCrofton209Champaign County
Ilur Portfolios - Carriage Estates LlcIL0195350CWSCrofton115Champaign County
Ilur Woods Edge Mhp LlcIL0195360CWSCrofton373Champaign County
Imperial MhcIL1975225CWSDenver328Will County
Imtt Illinois Llc - LemontIL3131607NTNCWSLemont110Cook County
Imtt Illinois Llc ChannahonIL3151951NTNCWSChannahan66Will County
In Grown Farms 2 LlcIL3162628NTNCWSFreeport133Stephenson County
Incobrasa - West Plant BreakroomIL3166207NTNCWSGilman110Iroquois County
Incobrasa IndustriesIL3138727NTNCWSLe Roy150Iroquois County
Indian Bluffs SubdivisionIL1615520CWSCoal Valley138Rock Island County
Indian Creek Homeowners And Water Assn.IL1135250CWSTowanda210McLean County
Indian Head ParkIL0311410CWSIndian Head Park3,240Cook County
Indian Knoll School Dist 33IL3037291NTNCWSWest Chicago600DuPage County
IndustryIL1090300CWSIndustry475McDonough County
Ineos Joliet, LlcIL3114199NTNCWSChannahon200Will County
Ineos Styrolution America LlcIL3136655NTNCWSChannahon146Will County
Ingalls Park SubdivisionIL1975880CWSNew Lenox744Will County
Insight Hospital And Medical Center ChicIL3162412NTNCWSAddison400Cook County
IolaIL0250010CWSIola158Clay County
IpavaIL0570550CWSIpava447Fulton County
Ipsen InternationalIL3091785NTNCWSCherry Valley100Boone County
Iroquois Mobile Estates, Inc.IL0755185CWSSt Petersburg105Iroquois County
IrvingIL1350350CWSIrving373Montgomery County
IrvingtonIL1890250CWSCentralia1,081Washington County
Itw MedicalIL3064493NTNCWSHebron200McHenry County
IukaIL1210150CWSIuka512Marion County
IvesdaleIL0194560CWSIvesdale248Champaign County
J M Huber Well 1IL3158956NTNCWSQuincy25Adams County
J M Huber Well 2IL3159459NTNCWSQuincy26Adams County
Jbs CorporationIL3053652NTNCWSBeardstown2,000Cass County
Jeffersonville (Geff)IL1910200CWSJeffersonville355Wayne County
JeisyvilleIL0210200CWSTaylorville102Christian County
JeromeIL1670600CWSSpringfield1,600Sangamon County
Jewel Wells Spring GroveIL3153072NTNCWSSpring Grove25McHenry County
JewettIL0350100CWSJewett303Cumberland County
Jimmy Johns (Prospect Crossing)IL3130534NTNCWSItasca25Cook County
Johns ManvilleIL3142604NTNCWSRockdale60Will County
Johnsburg 1IL1110040CWSJohnsburg174McHenry County
Johnsburg Jr High SchoolIL3062612NTNCWSJohnsburg575McHenry County
Johnsburg No.2IL1115080CWSJohnsburg1,124McHenry County
Joliet Community MhpIL1970140CWSSacremento96Will County
Joliet Inpatient Treatment CenterIL1970460CWSJoliet486Will County
Joliet Treatment CenterIL1970465CWSJoliet217Will County
JonesboroIL1810250CWSJonesboro1,799Union County
Jonesville PwdIL0995170CWSOglesgby243LaSalle County
Jons MhpIL0990020CWSMorris92LaSalle County
JoppaIL1270100CWSJoppa445Massac County
JoyIL1310100CWSJoy377Mercer County
Jubilee Water Company, Inc.IL1435220CWSBrimfield72Peoria County
Junction CityIL1210200CWSCentralia494Marion County
Jungbunzlauer Usa IncIL3152462NTNCWSThomson82Carroll County
Jw Marriot HotelIL3156836NTNCWSChicago700Cook County
Jx PeterbiltIL3157149NTNCWSWadsworth34Lake County
Kaho Public Water DistrictIL1170030CWSMt. Olive785Macoupin County
Kaluzny Bros IncIL3135574NTNCWSJoliet40Will County
KampsvilleIL0130250CWSNebo335Calhoun County
KaneIL0610250CWSKane296Greene County
Kane County Div Of TransportIL3067561NTNCWSSt Charles40Kane County
Kaneland High SchoolIL3010702NTNCWSWaterman1,800Kane County
Kaneville Township BuildingIL3068726NTNCWSKaneville69Kane County
KansasIL0450200CWSKansas707Edgar County
KarnakIL1530050CWSKarnak432Pulaski County
Kaskaskia Springs Water Co.IL0510020CWSVandalia1Fayette County
Kaskaskia Water DistrictIL1635110CWSNew Athens0St. Clair County
KeensburgIL1850150CWSKeensburg234Wabash County
KeithsburgIL1310150CWSKeithsburg747Mercer County
KemptonIL0530150CWSKempton177Ford County
KenneyIL0390200CWSClinton400De Witt County
Kewanee LsrcIL0730660CWSKewanee200Henry County
KeyesportIL0274580CWSKeyesport625Bond County, Clinton County
Keystone Steel And WireIL3119156NTNCWSBartonville700Peoria County
Kid Country Child CareIL3141564NTNCWSManhattan134Will County
Kiddy GardenIL3137349NTNCWSHawthorn Wood90Lake County
Kildeer Countryside SchoolIL3017178NTNCWSLong Grove600Lake County
Kiljordan MeadowsIL1090380CWSMacomb282McDonough County
KincaidIL0210250CWSKincaid1,561Christian County
Kindercare MchenryIL3057240NTNCWSMchenry50McHenry County
KinderhookIL1490400CWSKinderhook322Pike County
Kings Community SchoolIL3091116NTNCWSKings150Ogle County
KingstonIL0370250CWSKingston1,160DeKalb County
Kingston MinesIL1430450CWSKingston Mines259Peoria County
Kinkaid Area Water SystemIL0775100CWSMurphysboro1Jackson County
KinsmanIL0630450CWSDwight99Grundy County
KirklandIL0370300CWSKirkland1,650DeKalb County
KirkwoodIL1870050CWSKirkwood714Warren County
Kishwaukee CollegeIL3006759NTNCWSSpringfield200DeKalb County
Knolls Edge SubdivisionIL1415250CWSMonroe Center68Ogle County
KnoxvilleIL0950300CWSKnoxville3,120Knox County
Kolb Lena Cheese CompanyIL3155986NTNCWSLena150Jo Daviess County, Stephenson County
Kone IncIL3034819NTNCWSColona160Henry County
Ksi Conveyors IncIL3158923NTNCWSCissna Park65Iroquois County
La Bella Of CliftonIL0755389CWSWatseka55Iroquois County
La Grange Estates MhpIL0311540CWSLagrange440Cook County
La PrairieIL0010300CWSLa Prairie47Adams County
La RoseIL1230150CWSLarose96Marshall County
La Salle County Nursing HomeIL0995329CWSOttawa100LaSalle County
LaconIL1230100CWSLacon1,900Marshall County
LaddIL0110450CWSLadd1,263Bureau County
LafayetteIL1750100CWSLafayette177Stark County
LaharpeIL0670450CWSLa Harpe1,200Hancock County
Lake BarringtonIL0971080CWSLake Barrington500Lake County
Lake Barrington Shores SubdivsionIL0975520CWSLake Barrington2,300Lake County
Lake Bluff Estates MhpIL0975585CWSMelrose Park165Lake County
Lake Co. Pw - Arden Shores EstatesIL0975050CWSLibertyville105Lake County
Lake County Public Water DistrictIL0975790CWSZion1Lake County
Lake County Pw- Hawthorn WoodsIL0970450CWSLibertyville675Lake County
Lake Iroquois AssociationIL0755200CWSLoda800Iroquois County
Lake Lynwood Water SystemIL0735330CWSLynn Center75Henry County
Lake ShannonIL0910020CWSReddick500Kankakee County
Lake Suzanne MhpIL1635045CWSEnglewood108St. Clair County
Lake Thunderbird SubdivsionIL1555050CWSPeru450Putnam County
Lake View MhpIL0975345CWSBeach Park568Lake County
Lake Wildwind LlcIL2035125CWSMetamora260Woodford County
Lake Williamson Christian CenterIL1175100CWSCarlinville1,250Macoupin County
LakemoorIL0970270CWSLakemoor2,720Lake County, McHenry County
Lakeside PwdIL0775150CWSCarbondale3,065Jackson County
LakewoodIL1115760CWSLakewood4,267McHenry County
Lakewood Shores Improvement AssociationIL1975930CWSWilmington868Will County
LamoilleIL0110500CWSLa Moille660Bureau County
LanarkIL0150100CWSLanark1,504Carroll County
Land And Wtr AssnIL0995050CWSOttawa83LaSalle County
Langleyville PwdIL0215150CWSLangleyville450Christian County
LathamIL1070300CWSLatham323Logan County
Lawrence County Correctional CenterIL1010010CWSDieterich870Lawrence County
Lcpw - Brooks Farm SubdivisionIL0970280CWSLibertyville1,563Lake County
Lcpw - Highland Lake SubdivisionIL0975750CWSLibertyville414Lake County
Lcpw - Oak TerraceIL0978970CWSLibertyville45Lake County
Leaf RiverIL1410300CWSLeaf River403Ogle County
Ledgewood Elementary SchoolIL3096354NTNCWSRoscoe470Winnebago County
LeeIL1034600CWSLee313DeKalb County, Lee County
Legacy AcademyIL3132134NTNCWSRockford325Winnebago County
Legend Lakes Water AssociationIL2015300CWSRoscoe250Winnebago County
Leica BiosystemsIL3131045NTNCWSRichmond100McHenry County
LelandIL0990350CWSLeland951LaSalle County
LenaIL1770300CWSLena2,680Stephenson County
LenzburgIL1630700CWSSwansea616St. Clair County
LewistownIL0570600CWSLewistown2,400Fulton County
LexingtonIL1130800CWSLexington1,930McLean County
LibertyIL0010350CWSLiberty609Adams County
Liberty Park Homeowners AssociationIL0435600CWSWestmont950DuPage County
Liberty-Ledford PwdIL1655050CWSHarrisburg1,255Saline County
Lick Creek PwdIL1815100CWSBuncombe2,365Union County
Life Technologies CorporationIL3047050NTNCWSRockford50Winnebago County
Lifes Little MiraclesIL3154724NTNCWSGeneseo60Rock Island County
Lily Lake Grade SchoolIL3067520NTNCWSBurlington220Kane County
LimaIL0010400CWSUrsa168Adams County
Limestone-Walters PwdIL1430020CWSPeoria2,023Peoria County
Lincoln Correctional CenterIL1075450CWSLincoln1,036Logan County
Linden Manor MhpIL1670180CWSLa Verne84Sangamon County
Lindentree TownhomesIL0310370CWSGlenview232Cook County
Lindenwood Water AssociationIL1415300CWSLindenwood38Ogle County
Linn Mennonite Church & SchoolIL3126029NTNCWSEl Paso120Woodford County
Linway Estates MhpIL0315935CWSBlue Island380Cook County
Lisbon Grade SchoolIL3029207NTNCWSNewark150Kendall County
Lisbon North, Inc.IL0631000CWSMorris25Grundy County
Little Swan Lake SdIL1875050CWSMonmouth438Warren County
Little YorkIL1870100CWSLittle York304Warren County
LoamiIL1670700CWSLoami812Sangamon County
Lockport Heights SdIL1977070CWSLockport984Kankakee County, Will County
LodaIL0750550CWSWestville398Iroquois County
Loders-CroklaanIL3110288NTNCWSChannahon200Will County
Logan Correctional CenterIL1075520CWSLincoln1,500Logan County
London MillsIL0574620CWSLondon Mills400Fulton County
Long GroveIL0970340CWSLong Grove70Lake County
Longacre Estates MhpIL0290010CWSFarmington Hills375Coles County
LongviewIL0190350CWSLongview146Champaign County
LoraineIL0010450CWSLoraine300Adams County
Lord And Savior LutheranIL3130708NTNCWSCrystal Lake100McHenry County
Lord Of Glory/Gloryland Pre-ScIL3139519NTNCWSGrayslake350Lake County
Lord Of Life Lutheran SchoolIL3140202NTNCWSGeneva195Kane County
Lost Lake Utility DistrictIL1415100CWSDixon704Ogle County
LostantIL0990450CWSLostant463LaSalle County
Lots Of Tots Child CareIL3109587NTNCWSWoodstock40McHenry County
LouisvilleIL0250200CWSLouisville1,201Clay County
Loves Travel StopIL3163774NTNCWSMonroe Center80Ogle County
LovingtonIL1390250CWSArthur1,024Moultrie County
Lucky MonkIL3161212NTNCWSSouth Barrington736Cook County
LudlowIL0190400CWSLudlow330Champaign County
LyndonIL1950300CWSLyndon537Whiteside County
Lynn Water Association, IncIL0735100CWSLynn Center100Henry County
Lynnwood Water CorporationIL0995336CWSPeru100LaSalle County
Lynwood 3Rd AdditionIL0735280CWSGeneseo100Henry County
M C L W System, Inc.IL1315150CWSMilan98Mercer County
Ma Center ChicagoIL0895149CWSElburn75Kane County
MacedoniaIL0554640CWSBenton155Franklin County
Maclean Fogg M1 MetformIL3158774NTNCWSSavanna192Carroll County
Maclean Fogg-Hot Form PlantIL3090142NTNCWSSavanna150Carroll County
MaconIL1150250CWSMacon1,205Macon County
MaeystownIL1330200CWSMaeystown340Monroe County
MagnoliaIL1550200CWSPeru244Putnam County
MaldenIL0110550CWSMalden318Bureau County
MaltaIL0370350CWSMalta1,143DeKalb County
ManchesterIL1710250CWSRoodhouse297Scott County
Manchester SchoolIL3099937NTNCWSPoplar Grove150Boone County
Mancuso Village Park MhpIL2015545CWSClearwater325Winnebago County
ManitoIL1250300CWSManito1,552Mason County
ManliusIL0110600CWSPeru298Bureau County
MansfieldIL1470300CWSMansfield939Piatt County
Manteno MhpIL0915385CWSBloomfield Hills144Kankakee County
Maple Acres MhpIL0115135CWSPlainfield260Bureau County
Maple Crest Manor MhpIL0915040CWSDenver190Kankakee County
Maple ParkIL0890500CWSMaple Park1,484DeKalb County, Kane County
MapletonIL1430500CWSMapleton261Peoria County
Maplewood Mac LlcIL0190660CWSCrofton270Champaign County
MaquonIL0950350CWSMaquon218Knox County
Maranatha Bible ChurchIL3147991NTNCWSBarrington213Cook County, Lake County
Margarets Hi-Acre MhpIL0895285CWSAurora300Kane County
Margarets Park View Estates MhpIL0895545CWSAurora300Kane County
Marianjoy Rehab HospitalIL3155804NTNCWSWheaton500DuPage County
MariettaIL0570030CWSMarietta440Fulton County
MarineIL1190700CWSMarine1,037Madison County
Marion Mobile Home VillageIL1990560CWSCarbondale170Williamson County
MarissaIL1630750CWSMarissa1,921St. Clair County
MarkIL1550250CWSMark555Putnam County
MaroaIL1150300CWSMaroa1,700Macon County
Marquette BuildingIL3165811NTNCWSNewton360Cook County
Marquette HeightsIL1790400CWSMarquette Heights2,974Tazewell County
MartinsvilleIL0230150CWSMartinsville1,200Clark County
MartintonIL0750600CWSMartinton375Iroquois County
Mason CityIL1250350CWSMason City2,393Mason County
Mat HoldingsIL3104216NTNCWSWaukegan115Lake County
MathervilleIL1310200CWSMatherville651Mercer County
Mayfair SubdivisionIL1795750CWSMorton98Tazewell County
MazonIL0630500CWSMazon994Grundy County
Mc CookIL0311740CWSMccook280Cook County
Mcclure-East Cape PwdIL0035050CWSMcclure910Alexander County
McleanIL1130850CWSMclean791McLean County
McleansboroIL0650200CWSMcleansboro2,812Hamilton County
McnabbIL1550150CWSMcnabb258Putnam County
Meadow Lane SchoolIL3162297NTNCWSFairbury25Livingston County
Meadowbrook Mh Community, LlcIL1635060CWSFarmington Hills463St. Clair County
Meadowbrook PwdIL1195200CWSBethalto1,778Madison County
Meadows Mennonite HomeIL1135689CWSChenoa140McLean County
Meadows Of Bloomington MhpIL1135785CWSTroy343McLean County
Mechanicsburg-Buffalo Water CommissionIL1675150CWSBuffalo1,170Sangamon County
MediaIL0710250CWSMedia139Henderson County
MedoraIL1170550CWSJerseyville484Macoupin County
MelvinIL0530200CWSMelvin200Ford County
Menard Correctional CenterIL1575550CWSMenard2,950Randolph County
Menard Rural Water CoopIL1290010CWSPetersburg753Menard County
Menards - Long GroveIL3153064NTNCWSWaukegan75Lake County
Mendota Estates MhpIL0990560CWSPeru110LaSalle County
MeredosiaIL1370300CWSMeredosia1,075Morgan County
MerichkasIL3150169NTNCWSCrest Hill700Will County
Meridian MhpIL1415165CWSPoplar Grove78Ogle County
Meridian VillageIL1190110CWSGlen Carbon339Madison County
Merrionette ParkIL0311890CWSMerrionette Park1,969Cook County
Messiah Lutheran Presch And KinderIL3128645NTNCWSWauconda334Lake County
MetcalfIL0450250CWSMetcalf139Edgar County
Metro Prep SchoolIL3166470NTNCWSGlenview690Cook County
Mexichem Speciality Resins (Orbia PolymeIL3052894NTNCWSHenry100Marshall County
Mid America GrowersIL3122150NTNCWSGranville200Putnam County
Mid-American Air CenterIL3108738NTNCWSLawrenceville350Lawrence County
Mid-Mark Water CommissionIL0310230CWSMarkham25Cook County
MiddletownIL1070500CWSMiddletown330Logan County
Midland High SchoolIL3076984NTNCWSVarna410Marshall County
Midwest Generation - PowertonIL3055541NTNCWSPekin240Tazewell County
MilfordIL0750650CWSMilford1,306Iroquois County
Mill Point MhpIL2035165CWSEast Peoria200Woodford County
Mill ShoalsIL1930300CWSMill Shoals224White County
Millbrook Junior HighIL3016964NTNCWSGeneseo200Kendall County
Millburn SchoolIL3019562NTNCWSTwin Lakes400Lake County
Millburn School Dist #24IL3139931NTNCWSTwin Lakes650Lake County
MilledgevilleIL0150150CWSMilledgeville989Carroll County
Miller Comm Consol Sch 210IL3097519NTNCWSMarseilles150LaSalle County
MiltonIL1490450CWSMilton271Pike County
Milton Manor MhpIL1670170CWSLa Verne154Sangamon County
Mindhaven AcademyIL3049809NTNCWSMchenry100McHenry County
MineralIL0110650CWSMineral250Bureau County
MinierIL1790450CWSMinier1,180Tazewell County
MinonkIL2030400CWSMinonk1,928Woodford County
Mission Brook SdIL0315920CWSNorthbrook2,852Cook County
Mississippi Manufactured Home CommunityIL1610350CWSDecatur503Rock Island County
Mitchellsville PwdIL1655200CWSHarrisburg1,970Saline County
ModestoIL1170600CWSModesto182Macoupin County
MomenceIL0910650CWSMomence3,075Kankakee County
Monroe Center School - New WellIL3154666NTNCWSMonroe Center380Ogle County
Monroe Center School - Old WellIL3001578NTNCWSMonroe Center380Ogle County
Monte Carlo PlazaIL3149823NTNCWSPark Ridge235Cook County
Montessori Academy Glen EllynIL3148429NTNCWSGlen Ellyn80DuPage County
Montessori Chldrns Hse-N BarrIL3019372NTNCWSBarington90Lake County
Montessori School Of Long GroveIL3027532NTNCWSLong Grove25Lake County
Montmorency SchoolIL3035311NTNCWSRock Falls250Whiteside County
Moores Prairie Township Water CompanyIL0810030CWSBelle Rive213Jefferson County
MooseheartIL0895319CWSMooseheart272Kane County
Morgan CreekIL0935140CWSYorkville66Kendall County
Morningside Mobile Estates MhpIL1075145CWSWaynesville34Logan County
MorrisonvilleIL0210300CWSMorrisonville1,068Christian County
Morton Grove - Niles Water CommissionIL0311960CWSNiles0Cook County
Mother Teresa Catholic AcademyIL3024281NTNCWSCrete220Will County
Moultrie County RwdIL1395150CWSSullivan2,600Moultrie County, Shelby County
Mound CityIL1530100CWSMound City526Pulaski County
Mound PwdIL1635050CWSCollinsville1,243Madison County, St. Clair County
Mound StationIL0090050CWSMt. Sterling122Brown County
MoundsIL1530150CWSMounds1,011Pulaski County
Mount AuburnIL0210350CWSMt. Auburn480Christian County
Mount CarrollIL0150200CWSMt Carroll1,479Carroll County
Mount ClareIL1170650CWSGillespie311Macoupin County
Mount ErieIL1910350CWSMount Erie128Wayne County
Mount MorrisIL1410350CWSMt. Morris2,861Ogle County
Mount Morris Estates MhpIL1415185CWSBloomfield Hills425Ogle County
Mount St Joseph School IcfIL0975849CWSWonder Lake125Lake County
Mount SterlingIL0090100CWSMt. Sterling3,271Brown County
Mount Vernon Association IncIL0855100CWSEast Dubuque438Jo Daviess County
MoweaquaIL1730200CWSMoweaqua1,785Shelby County
MuddyIL1650250CWSMuddy171Saline County
Mulberry GroveIL0050100CWSMulberry Grove548Bond County
Mulkeytown PwdIL0555150CWSMulkeytown390Franklin County
Muller-Pinehurst DairyIL3163824NTNCWSRockford100Winnebago County
Murphysboro LsrcIL0770540CWSPinckneyville167Jackson County
Murrayville-Woodson Water CommissionIL1375150CWSMurrayville1,403Morgan County
Muslim Community CenterIL3096982NTNCWSRockford100Winnebago County
Nancys MhpIL0735385CWSDavenport77Henry County
NaplateIL0990600CWSOttawa465LaSalle County
NasonIL0810350CWSBenton207Jefferson County
Natures Scholars DaycareIL3158519NTNCWSRingwood100McHenry County
NauvooIL0670500CWSNauvoo1,200Hancock County
NeboIL1490500CWSNebo280Pike County
NeogaIL0350150CWSNeoga1,398Cumberland County
NeponsetIL0110700CWSNeponset450Bureau County
Nettle Creek SchoolIL3030700NTNCWSMorris50Grundy County
New AthensIL1631050CWSNew Athens1,970St. Clair County
New BerlinIL1670800CWSNew Berlin1,150Sangamon County
New BostonIL1310250CWSNew Boston613Mercer County
New CantonIL1490550CWSNew Canton359Pike County
New HavenIL0590150CWSNew Haven424Gallatin County
New HollandIL1070450CWSSan Jose275Logan County
New Memphis PwdIL0275350CWSNew Memphis805Clinton County
New MindenIL1890350CWSNew Minden343Washington County
New Perspective Senior LivingIL0970330CWSIngleside62Lake County
New Piasa Chautauqua PwsIL0830010CWSNebo335Jersey County
New Salem PwdIL1090010CWSAdair451McDonough County
New WindsorIL1310500CWSNew Windsor740Mercer County
NewarkIL0930100CWSNewark986Kendall County
NewmanIL0410250CWSNewman836Douglas County
Newport SchoolIL3026922NTNCWSBeach Park350Lake County
NewtonIL0790100CWSNewton2,977Jasper County
NilwoodIL1170750CWSModesto1,394Macoupin County
Nitrex Inc Chicago OperationsIL3066340NTNCWSAurora25Kane County
NobleIL1590150CWSNoble805Richland County
NokomisIL1350450CWSNokomis2,370Montgomery County
NorrisIL0570750CWSNorris358Fulton County
Norris CityIL1930350CWSNorris City2,155White County
North Barrington Elm SchoolIL3099887NTNCWSBarrington700Lake County
North Boone High SchoolIL3148619NTNCWSPoplar Grove500Boone County
North Boone Middle SchoolIL3091728NTNCWSPoplar Grove230Boone County
North Boone Upper Elementary SchoolIL3138248NTNCWSPoplar Grove262Boone County
North CityIL0550300CWSCoello772Franklin County
North Hazelwood SbdvIL0735850CWSGeneseo100Henry County
North HendersonIL1310300CWSNorth Henderson172Mercer County
North Meadow Village MhpIL1130060CWSNormal495McLean County
North Morgan Water CoopIL1375050CWSJacksonville2,763Morgan County
North PekinIL1790550CWSNorth Pekin1,478Tazewell County
North Regional Water FacIL0435850CWSDarien770DuPage County
North UticaIL0990650CWSUtica1,323LaSalle County
Northbrook MhcIL1670130CWSSouthfield220Sangamon County
Northbrook Montessori SchoolIL3161448NTNCWSNorthbrook48Cook County
Northern White Sands LlcIL3161828NTNCWSOttawa25LaSalle County
Northfield Block Company 1IL3155747NTNCWSMorris25Grundy County
Northfield Block Company 2IL3155754NTNCWSMorris75Grundy County
Northfield Block Company 3IL3155762NTNCWSMorris75Grundy County
Northgate Estates MhpIL2010470CWSRockford100Winnebago County
Northshore University SkokieIL3155309NTNCWSSkokie2,500Cook County
Northwest Bible Baptist ChurchIL3135178NTNCWSElgin1,600Kane County
Northwest Comm Hosp Outpt CareIL3162842NTNCWSWest Chicago200Lake County
Northwest Suburban Municipal JawaIL0315400CWSElk Grove Village1Cook County
Northwest Water CommissionIL0315300CWSDes Plaines1Cook County
Northwestern Medicine Mchenry HospitalIL3163600NTNCWSMchenry600McHenry County
Northwestern Medicine Woodstock HospitalIL3163725NTNCWSWoodstock300McHenry County
Nouryon Surface Chemistry LlcIL3065383NTNCWSMorris100Grundy County
Npi Hillcrest Investor GroIL3166413NTNCWSRochelle,25Ogle County
Nucor Rebar Fabrication MidwestIL3162727NTNCWSBelvidere40Boone County
Nuestro Queso - Exterior WellIL3162743NTNCWSKent91Stephenson County
Nuestro Queso - Interior WellIL3162750NTNCWSKent91Stephenson County
Nussbaum TransportationIL3157677NTNCWSHudson85McLean County
Nussbaum Transportation #2IL3162669NTNCWSHudson25McLean County
Nussbaum Transportation Well #3IL3165837NTNCWSDowns30McLean County
Nutrien Ag SolutionsIL3164442NTNCWSBiggsville35Henderson County
Oak Grove Mhp - Madison CountyIL1195180CWSFarmington Hills138Madison County
Oak Grove Mhp - Rock Island CountyIL1617785CWSWest Milan138Rock Island County
Oak Grove VillageIL0810200CWSFarmington Hills385Jefferson County
Oak Lane Acres SubdivisionIL1795800CWSMorton120Tazewell County
Oak Lane MhcIL0311900CWSDenver388Cook County
Oak Lawn MhpIL0075275CWSPoplar Grove450Boone County
Oak Park EstatesIL1550010CWSPeru185Putnam County
Oak Ridge Sanitary DistrictIL2035300CWSMetamora300Woodford County
Oak View EstatesIL0730120CWSCoal Valley95Henry County
Oakbrook Estates MhpIL1115125CWSNorthbrook1,012McHenry County
Oakbrook TerraceIL0430750CWSOakbrook Terrace1,440DuPage County
OakfordIL1290150CWSOakford234Menard County
OaklandIL0290300CWSOakland739Coles County
Oaklane SbdvIL0995250CWSOttawa63LaSalle County
Oakwood EstatesIL1670060CWSSpringfield420Sangamon County
Oakwood Twp High SchoolIL3005611NTNCWSFithian350Vermilion County
Oakwood West SubdivisionIL0730070CWSCoal Valley38Henry County
Oasis MhpIL0315185CWSNorthbrook3,000Cook County
OblongIL0330150CWSOblong2,321Crawford County
Obrien SteelIL3157347NTNCWSCongervile150Woodford County
OdellIL1050550CWSOdell1,014Livingston County
OdinIL1210350CWSOdin2,543Marion County
OgdenIL0190500CWSOgden750Champaign County
Ogden Gardens SubdivisionIL0895400CWSAurora420Kane County
OhioIL0110800CWSOhio465Bureau County
OkawvilleIL1890400CWSOkawville1,457Washington County
Old Salem ChautauquaIL1295100CWSPetersburg128Menard County
Old ShawneetownIL0590200CWSShawneetown118Gallatin County
Olin Winchester LlcIL3095893NTNCWSEast Alton3,250Madison County
Olivet PwdIL1835300CWSGeorgetown300Vermilion County
OlmstedIL1530250CWSOlmsted435Pulaski County
Olympia SchoolIL3057844NTNCWSStanford918McLean County
OmahaIL0590250CWSOmaha234Gallatin County
OnargaIL0750700CWSOnarga1,409Iroquois County
OneidaIL0950400CWSOneida644Knox County
Ophiem PwsIL0735150CWSAlpha110Henry County
OquawkaIL0710300CWSOquawka1,125Henderson County
OrangevilleIL1770350CWSOrangeville780Stephenson County
Oraville Water DistrictIL0775250CWSAva1,108Jackson County
OreanaIL1150450CWSForsyth892Macon County
Oregon ToolIL3091157NTNCWSOregon350Ogle County
OrientIL0550350CWSOrient362Franklin County
OrionIL0730700CWSOrion1,754Henry County
Osco Mutual Water Supply Company, Inc.IL0735200CWSOsco80Henry County
Osf St Francis HospitalIL3164020NTNCWSPeoria10,000Peoria County
Ottawa Estates MhpIL0995225CWSLake Forest125LaSalle County
Otter Creek Lake Utilities DistrictIL2015320CWSDavis2,342Stephenson County, Winnebago County
Otter Lake Water CommissionIL1175200CWSVirden1,318Macoupin County
PalmerIL0210450CWSPalmer250Christian County
PalmyraIL1170800CWSPalmyra605Macoupin County
Palmyra-Modesto Water CommissionIL1175150CWSModesto110Macoupin County
PanamaIL0054720CWSAviston343Bond County, Montgomery County
Paradise Manor MhpIL1617665CWSPeru200Rock Island County
Paradise MhpIL0310010CWSPhoenix390Cook County
Park Center Of Kemper Lakes AviandsIL3027961NTNCWSLong Grove1,200Lake County
Park City MhpIL0975575CWSPark City2,460Lake County
Park Meadowland West MhpIL0075235CWSGarden City100Boone County
Park Place Of SchaumburgIL3080184NTNCWSSchaumburg25Cook County
Park Ridge MhcIL1670110CWSSarasota68Sangamon County
ParkersburgIL1590250CWSParkersburg356Richland County
Parsons IncIL3058388NTNCWSRoanoke180Woodford County
Patch Place MhcIL1670100CWSSpringfield47Sangamon County
PatokaIL1210400CWSPatoka545Marion County
Patterson (Inc As Wilmington)IL0610450CWSPatterson320Greene County
Pauls MhpIL0975485CWSPeru38Lake County
Paw PawIL1030400CWSPaw Paw830Lee County
PawneeIL1670850CWSPawnee2,700Sangamon County
PaysonIL0010550CWSPayson1,386Adams County
Pbc LinearIL3096453NTNCWSRoscoe140Winnebago County
Pcs PhosphateIL3156471NTNCWSMarseilles36LaSalle County
Peaceful PathwaysIL3155390NTNCWSYorkville25Kendall County
PearlIL1490650CWSNebo166Pike County
Pearl CityIL1770400CWSPearl City790Stephenson County
Pearl Valley FarmsIL3157933NTNCWSPearl City25Stephenson County
PecatonicaIL2010250CWSPecatonica2,195Winnebago County
Pekin Fed Correctional Inst And PrsncmpIL1790030CWSPekin1,635Tazewell County
Pembroke TownshipIL0910010CWSHopkins Park1,410Kankakee County
Penfield PwdIL0195100CWSPenfield150Champaign County
Peoples GasIL3074831NTNCWSFisher38Champaign County
Peoples GasIL3158600NTNCWSFisher40Champaign County, Cook County
Peotone Intermediate CenterIL3139766NTNCWSFrankfort325Will County
PercyIL1570350CWSPercy961Randolph County
PerryIL1490700CWSPerry388Pike County
Peter Pan Day SchoolIL3039792NTNCWSNaperville100DuPage County
Peter Rabbit Day Care SchoolIL3127761NTNCWSEdwards50Peoria County
Petrolia PwdIL1015350CWSBridgeport1,275Lawrence County
Pheasant Lake Estates MhpIL1975385CWSBeecher1,528Will County
Pheasant Run MhpIL1670250CWSColdwater350Sangamon County
Phil-Aire Estates MhpIL2015625CWSRockton80Winnebago County
PhoenixIL0312490CWSPhoenix1,994Cook County
Piatt County Nursing HomeIL1470360CWSMonticello93Piatt County
PierronIL1194760CWSPierron1,709Clinton County, Madison County
Pinckneyville Correctional CenterIL1450010CWSPinckneyville2,470Perry County
Pioneer Hi-Bred Intl ResearchIL3151670NTNCWSPrinceton30Bureau County
Piper CityIL0530300CWSPiper City875Ford County
PittsburgIL1990600CWSPittsburg2,948Williamson County
PlainvilleIL0010600CWSBarry264Adams County
Pleasant HillIL1490800CWSPleasant Hill1,004Pike County
Pleasant PlainsIL1670900CWSPleasant Plains1,508Sangamon County
Pleasant Ridge MhpIL0435945CWSChicago284DuPage County
Plumfield Water DistrictIL0555400CWSWest Frankfort460Franklin County
PlymouthIL0670550CWSPlymouth460Hancock County
PocahontasIL0050200CWSAviston697Bond County
PoloIL1410450CWSPolo2,355Ogle County
Polo Dr And Saddle Rd SubdivisionIL0437000CWSWheaton93DuPage County
Polynt Composites Usa, IncIL3111278NTNCWSMorris120Grundy County
Pontiac Correctional CenterIL1055500CWSPontiac1,665Livingston County
Poplar GroveIL0070150CWSPoplar Grove2,372Boone County
Poplar Grove AirportIL3164269NTNCWSPoplar Grove80Boone County
Poplar Grove SouthIL0070300CWSPoplar Grove1,877Boone County
Pork KingIL3065334NTNCWSWoodstock75McHenry County
Port ByronIL1610550CWSPort Byron1,668Rock Island County
Ports Sullivan Lake Owners AssociationIL0971160CWSLakemoor293Lake County
Posh Tots AcademyIL3152892NTNCWSMetamora70Woodford County
PotomacIL1830650CWSPotomac650Vermilion County
Powers Water Co, Inc.IL0895550CWSFox River Grove216Kane County
Prairie CityIL1090400CWSPrairie City425McDonough County
Prairie Du RocherIL1570400CWSPrairie Du Rocher759Randolph County
Prairie Dupont PwdIL1635070CWSEast Carondelet1,863St. Clair County
Prairie Grove SchoolIL3062398NTNCWSCrystal Lake1,050McHenry County
Prairie Oaks Ests Homeowners AssnIL0630060CWSCoal City107Grundy County
Prairie Ridge AssociationIL1115730CWSSchaumburg148McHenry County
Prairie Road Pump CorporationIL2015100CWSRockford150Winnebago County
Prairie Trails Of Long GroveIL0971200CWSLong Grove189Lake County
Prairie View Elementary SchoolIL3140228NTNCWSGeneva508Kane County
Prairieview Jr. High SchoolIL3005256NTNCWSThomasboro67Champaign County
Prairieview Lutheran HomeIL0750020CWSDanforth113Iroquois County
Precision Planting (Monsanto)IL3156760NTNCWSTremont25Tazewell County
Primrose SchoolIL3161455NTNCWSWest Chicago50Lake County
Princeton Christian AcademyIL3133694NTNCWSPeoria250Bureau County
PrincevilleIL1430750CWSPrinceville1,901Peoria County
Promontory Pointe Homeowners AssociationIL0970320CWSLake Zurich78Lake County
ProphetstownIL1950400CWSProphetstown1,946Whiteside County
Prospect HeightsIL0312530CWSProspect Heights2,280Cook County
Prospect Heights PlazaIL3161463NTNCWSProspect Heights1,240Cook County
Prospect Water DistrictIL1655110CWSHarrisburg1,140Saline County
PulaskiIL1530300CWSPulaski202Pulaski County
Putnam County Jr HighIL3076398NTNCWSJoliet200Putnam County
Quail Run Mobile Home ParkIL1190270CWSEdwardsville168Madison County
Quentin Collections/Jimmy JohnsIL3150425NTNCWSLenexa250Lake County
Quentin Rd Bible Baptist ChIL3129833NTNCWSLake Zurich499Lake County
Quentin Road Bible Baptist SchoolIL3156554NTNCWSLake Zurich910Lake County
Quikrete CompaniesIL3139295NTNCWSElburn53Kane County
RadomIL1890450CWSNashville193Washington County
Rainbow Resource Office BuildingIL3166298NTNCWSToulon40Stark County
Rainbow Resource WarehouseIL3166306NTNCWSToulon40Stark County
Rainbow RidgeIL1615580CWSMilan91Rock Island County
Raleigh Water DistrictIL1655120CWSRaleigh605Saline County
RamseyIL0510200CWSRamsey966Fayette County
RankinIL1830700CWSRankin500Vermilion County
Rankin School Dist (148430)IL3148430NTNCWSPekin158Tazewell County
Rankin School District No 98IL3055947NTNCWSPekin240Tazewell County
Rapids CityIL1610600CWSRapids City962Rock Island County
RaritanIL0710350CWSRaritan180Henderson County
RaymondIL1350550CWSRaymond974Montgomery County
Recovery Centers Of AmericaIL0890080CWSSt. Charles130Kane County
ReddickIL0914780CWSPeru196Kankakee County
Reed SchoolIL3024497NTNCWSLockport431Will County
Rend Lake Inter-City Water SystemIL0555100CWSBenton3,650Franklin County
Rend Lake Mobile Home ParkIL0550660CWSFort Mill65Franklin County
Retz Addn Improvement AssociationIL0995400CWSOttawa168LaSalle County
ReynoldsIL1614800CWSReynolds508Mercer County, Rock Island County
Richardson Electronics LtdIL3107524NTNCWSLafox150Kane County
RichmondIL1110750CWSRichmond2,089McHenry County
RichviewIL1890500CWSRichview251Washington County
Ridge FarmIL1830750CWSRidge Farm973Vermilion County
Ridge Village MhpIL1670160CWSSpringfield120Sangamon County
Ridgecrest North SubdivisionIL0635250CWSMorris60Grundy County
Ridgewood Ledges Water AssociationIL1615670CWSMilan300Rock Island County
RidgwayIL0590300CWSRidgway874Gallatin County
Riley Community SchoolIL3064774NTNCWSMarengo220McHenry County
Ringwood Primary CenterIL3001131NTNCWSMchenry170McHenry County
RioIL0950450CWSRio265Knox County
RipleyIL0090150CWSRipley250Brown County
River City Mhc, LlcIL2015645CWSSimpsonville83Winnebago County
River East Village MhpIL1795495CWSVernon Hills65Tazewell County
River Oaks Estates MhpIL0310395CWSBloomfield Hills677Cook County
River Ridge SchoolIL3142018NTNCWSHanover30Jo Daviess County
Riverdale Preschool CenterIL3107474NTNCWSRock Falls80Whiteside County
Riverdale School District #100IL3113985NTNCWSPort Byron1,340Rock Island County
Riverside Mhp, LlcIL1955165CWSColorado Springs120Whiteside County
Riverview Grade SchoolIL3010132NTNCWSEast Peoria240Woodford County
Riverwoods Montessori SchoolIL3107045NTNCWSRiverwoods65Lake County
Road Ranger 132IL3079467NTNCWSRockford45Champaign County
Roadster ShopIL3132811NTNCWSWaukegan40Lake County
RoanokeIL2030550CWSRoanoke2,000Woodford County
RobertsIL0530350CWSRoberts367Ford County
Robinson Correctional CenterIL0330010CWSDieterich1,085Crawford County
Rock CityIL1770500CWSRock City293Stephenson County
Rock River Estates MhpIL1035245CWSDixon400Lee County
RockbridgeIL0610300CWSPalmyra180Greene County
RockdaleIL1970850CWSRockdale2,012Will County
Rockford Mhc, LlcIL2015345CWSSimpsonville240Winnebago County
Rockford Mutual Insurance CoIL3114454NTNCWSSterling125Winnebago County
Rockland Office PlazaIL3086751NTNCWSLake Bluff200Lake County
Rolling Green Estates MhpIL1415245CWSChicago191Ogle County
Rolling Meadows MhcIL1415265CWSClearwater447Ogle County
Rolling Meadows Mhc (Jefferson Co)IL0815110CWSDestin218Jefferson County
Rolling Meadows-FoxgloveIL1410040CWSClearwater70Ogle County
RoodhouseIL0610350CWSRoodhouse1,753Greene County
Rooks Creek Elementary SchoolIL3005413NTNCWSGraymont66Livingston County
RosevilleIL1870200CWSRoseville915Warren County
RossvilleIL1830800CWSRossville1,331Vermilion County
Round Lake HeightsIL0970260CWSRound Lake Heights2,622Lake County
Round Prairie Water CoopIL1670090CWSDieterich813Sangamon County
Rovanco Piping System IncIL3153569NTNCWSJoliet80Will County
RoxanaIL1190900CWSRoxana1,517Madison County
RoyalIL0190700CWSRoyal273Champaign County
Royal LakesIL1170830CWSRoyal Lakes235Macoupin County
Royal Melbourne Homeowners AsnIL0970170CWSSchaumburg382Lake County
Royal Oaks MhpIL1115145CWSChicago170McHenry County
RoyaltonIL0555030CWSRoyalton1,118Franklin County
RumaIL1570550CWSRuma341Randolph County
Rural Wabash County Water DistrictIL1850010CWSLancaster1,877Wabash County
RushvilleIL1690200CWSRushville3,375Schuyler County
Rustic Acres Water AssociationIL0735500CWSColona260Henry County
RutlandIL0991000CWSRutland250LaSalle County
Rutland School Dist 230IL3097477NTNCWSOttawa100LaSalle County
S L M Water CommissionIL1635090CWSMascoutah385St. Clair County
Sabic Innovative PlasticsIL3065425NTNCWSOttawa440LaSalle County
Saddlebrook FarmsIL0970120CWSGrayslake2,558Lake County
Saint Patrick SchoolIL3026831NTNCWSWadsworth225Lake County
Sainte MarieIL0790200CWSDieterich243Jasper County
San JoseIL1254840CWSSan Jose479Logan County, Mason County
SandovalIL1210500CWSSandoval1,422Marion County
Sandwich Estates MhpIL0374860CWSChicago90DeKalb County
Santa Fe Estates Water AssociationIL1435490CWSChillicothe68Peoria County
Sauber Mfg Co Super ShopIL3155150NTNCWSVirgil84Kane County
Sauk Valley CollegeIL3117887NTNCWSDixon500Lee County
SavannaIL0150250CWSSavanna3,020Carroll County
Save A PetIL3152173NTNCWSWaukegan50Lake County
SawyervilleIL1170850CWSSawyerville578Macoupin County
SaybrookIL1130950CWSSaybrook679McLean County
Sc Edgewood Terrace Property, LlcIL1795345CWSSouthfield248Tazewell County
Scales MoundIL0850400CWSScales Mound436Jo Daviess County
Schram CityIL1350600CWSHillsboro563Montgomery County
Schwermanns 2Nd And 3Rd Wtr BrdIL0977150CWSMundelein285Lake County
SciotaIL1090020CWSSciota180McDonough County
Scot ForgeIL3135756NTNCWSSpring Grove253McHenry County
Scott Company HyponexIL3153346NTNCWSMorrison25Whiteside County
Scott County Rural Water Co-OpIL1710020CWSWinchester493Scott County
Scotts Miracle GroIL3136275NTNCWSChannahon50Will County
Scottsdale MhcIL1671210CWSSpringfield114Sangamon County
Scottville Rural Water Company, Inc.IL1170010CWSPalmyra695Macoupin County
SeatonIL1310350CWSMuscatine214Mercer County
SeatonvilleIL0110900CWSSeatonville321Bureau County
SecorIL2030600CWSSecor351Woodford County
SenecaIL0991050CWSSeneca2,353LaSalle County
Seneca Mobile Homes LlcIL0995425CWSMorris10LaSalle County
Serena Community SchoolIL3097352NTNCWSSerena555LaSalle County
Serenity Hospice & HomeIL3163147NTNCWSOregon25Ogle County
SesserIL0550450CWSSesser2,556Franklin County
Seward Screw Products 16377IL3150748NTNCWSSeward100Winnebago County
Seymour Water DistrictIL0190060CWSSeymour392Champaign County
ShabbonaIL0370450CWSShabbona913DeKalb County
Shadow Wood MhpIL0195320CWSChampaign680Champaign County
Shangri-La MhpIL1415285CWSBarrington370Ogle County
ShannonIL0150300CWSShannon801Carroll County
Sharpsburg And Neighboring Area Water SyIL0210030CWSStonington868Christian County
Shawnee Correctional CenterIL0870010CWSDieterich1,617Johnson County
Shawnee Valley PwdIL1815550CWSWolf Lake738Union County
ShawneetownIL0590350CWSShawneetown1,054Gallatin County
SheffieldIL0110950CWSSheffield821Bureau County
SheldonIL0750800CWSSheldon900Iroquois County
Sheridan Correctional CenterIL0995840CWSSheridan1,670LaSalle County
Sheridan Grade SchoolIL3003145NTNCWSNew Lenox227LaSalle County
SherrardIL1310400CWSSherrard785Mercer County
ShipmanIL1170950CWSShipman541Macoupin County
Shirland SchoolIL3047175NTNCWSShirland200Winnebago County
Shops Of KildeerIL3141028NTNCWSOak Brook650Lake County
Shoreline Trc MhpIL0975615CWSChicago504Lake County
SibleyIL0530400CWSSibley245Ford County
SidellIL1830850CWSSidell557Vermilion County
SigelIL1730350CWSAltamont400Shelby County
Silver Glen Homeowner'S AssociationIL0890040CWSSt. Charles595Kane County
Silvis Heights Water CorpIL1615750CWSSilvis1,450Rock Island County
SimsIL1910400CWSSims244Wayne County
Six Oaks MhpIL2015685CWSWheaton48Winnebago County
Skyview EstatesIL0915526CWSMomence56Kankakee County
Sleepy HollowIL0890750CWSSleepy Hollow3,100Kane County
Smg - LynnvilleIL1370250CWSWinchester193Morgan County
Smg Water CoopIL1370030CWSWinchester3,110Morgan County
Smith Professional Office CntrIL3130393NTNCWSBarrington285Lake County
SmithboroIL0050250CWSSmithboro188Bond County
SmithfieldIL0570850CWSSmithfield375Fulton County
SmithtonIL1631300CWSSmithton4,381St. Clair County
Snake Trail Wtr AssnIL0495350CWSTeutopolis120Effingham County
Snap On ToolsIL3064451NTNCWSCrystal Lake700McHenry County
Solstice Advanced Materials Us, IncIL3042127NTNCWSMetropolis470Massac County
SomonaukIL0374870CWSSomonauk1,860DeKalb County
SorentoIL0050300CWSAviston429Bond County
South BarringtonIL0310200CWSGeneva1,175Cook County
South Barrington Park DistrictIL3135459NTNCWSSouth Barrington200Cook County
South Barrington Partners, LlcIL3147785NTNCWSNorthbrook121Cook County
South Bluff MhpIL2010460CWSSandy507Winnebago County
South Fulton Water DistrictIL0570010CWSAstoria1,430Fulton County
South Lawrence Water CorpIL1010020CWSSumner1,195Lawrence County
South Palmyra Water CommissionIL1170060CWSPalmyra838Macoupin County
South Palos Twsp Sanitary DistIL0310140CWSPalos Park2,800Cook County
South PekinIL1790650CWSSouth Pekin996Tazewell County
South RoxanaIL1190970CWSSouth Roxana1,891Madison County
South Sangamon Water CommissionIL1670080CWSRochester134Sangamon County
South WilmingtonIL0630650CWSSouth Wilmington710Grundy County
Southeast Joliet SdIL1977490CWSJoliet2,000Will County
Southwater IncIL0030020CWSTamms2,185Alexander County
Southwestern Il Correctional CenterIL1630030CWSEast St. Louis563St. Clair County
SparlandIL1230200CWSSparland358Marshall County
Spectrum Preferred MeatsIL3163014NTNCWSMount Morris60Ogle County
Spin Lake Homeowners Association, Inc.IL1135140CWSDanvers200McLean County
Spoon River Valley SchoolIL3033225NTNCWSGalesburg560Fulton County
Spring Grove Elementary SchoolIL3002931NTNCWSSpring Grove500McHenry County
Spring Lake Consol SchoolIL3010199NTNCWSManito125Tazewell County
Spring Lakes MhpIL0315145CWSElgin940Cook County
SpringertonIL1930450CWSSpringerton176White County
St AnneIL0910700CWSSt Anne1,200Kankakee County
St AugustineIL0950500CWSMonmouth119Knox County
St ElmoIL0510250CWSSt Elmo1,272Fayette County
St FrancisvilleIL1010250CWSSt. Francisville583Lawrence County
St George SchoolIL3076026NTNCWSBourbonnais200Kankakee County
St JacobIL1190950CWSSt. Jacob2,008Madison County
St John BaptistIL3062620NTNCWSWoodstock150McHenry County
St LiboryIL1631200CWSSwansea628St. Clair County
St Marks Day SchoolIL3117762NTNCWSBarrington Hills60Lake County
St Marys School Bored WellIL3140715NTNCWSEdwards140Peoria County
St Matthew Lutheran SchoolIL3019075NTNCWSLake Zurich400Lake County
St Pauls Lutheran SchoolIL3059584NTNCWSMilford94Iroquois County
St PeterIL0510300CWSSt Peter483Fayette County
St Ritas SchoolIL3096966NTNCWSRockford100Winnebago County
St Rose PwdIL0275250CWSSt Rose1,688Bond County, Clinton County
StandardIL1550300CWSStandard225Putnam County
StanfordIL1131000CWSStanford600McLean County
Stateline FoundriesIL3047530NTNCWSRoscoe52Winnebago County
Stateville Correctional CenterIL1977910CWSCrest Hill992Will County
SteelevilleIL1570650CWSSteeleville1,960Randolph County
Steeple Run SbdvIL0437160CWSDarien1,931DuPage County
Stelle Community AssnIL0535100CWSCabery100Ford County
Stepan CompanyIL3081588NTNCWSElwood300Will County
Stephenson Mobile EstatesIL1775235CWSFreeport75Stephenson County
Sterling Estates MhpIL0315850CWSFarmington Hills1,954Cook County
Sterling SteelIL3104455NTNCWSSterling500Whiteside County
StewardIL1030450CWSSteward238Lee County
StewardsonIL1730400CWSStewardson734Shelby County
Stillman ValleyIL1410550CWSStillman Valley1,200Ogle County
StocktonIL0850450CWSStockton1,728Jo Daviess County
Stone Creek SchoolIL3123513NTNCWSRoscoe543Winnebago County
StonefortIL1654880CWSStonefort234Saline County, Williamson County
Stonetown Oaks Mhp LlcIL0190070CWSGlendale320Champaign County
StoningtonIL0210550CWSStonington932Christian County
Storybook HighlandsIL0935250CWSBristol100Kendall County
Stratford West Association, Inc.IL1095200CWSMacomb44McDonough County
StrawnIL1050700CWSStrawn133Livingston County
StronghurstIL0710400CWSStronghurst838Henderson County
SubletteIL1030500CWSSublette380Lee County
Suburban Apartments (De Kalb Univ Dvl)IL0375148CWSOak Brook1,050DeKalb County
Suburban Heights SubdivisionIL1615800CWSMilan75Rock Island County
Sugar Creek Manufactured Home Comm., LlcIL0750910CWSMilford115Iroquois County
Sugar Crk PwdIL1675300CWSSpringfield754Sangamon County
SummerfieldIL1631350CWSSummerfield347St. Clair County
SumnerIL1010300CWSNewton921Lawrence County
Sunny Acres MhpIL0915545CWSChicago750Kankakee County
Sunny Hill Estates SubdivisionIL0735300CWSOrion375Henry County
Sunnyland SubdivisionIL1977730CWSJoliet300Will County
Sunrise Senior LivingIL0312540CWSProspect Heights82Cook County
Sunset MhpIL0310080CWSNorthbrook1,400Cook County
Swedish Covenant HospitalIL3162651NTNCWSChicago1,200Cook County
Swedona Water AssociationIL1315200CWSSherrard109Mercer County
Swenson Spreader LlcIL3159806NTNCWSLindenwood25Ogle County
Sylvan Lake 1St SubdivisionIL0977100CWSMundelein210Lake County
T-L Rural Water DistrictIL1430030CWSGlasford2,243Peoria County
Table GroveIL0570900CWSTable Grove353Fulton County
Taleem Ul HaqIL3161752NTNCWSPlainfield100Will County
TallulaIL1290250CWSTallula868Menard County
Tamarak Day CampIL3019364NTNCWSLincolnshire110Lake County
TamaroaIL1450250CWSDuquoin2,197Perry County
TammsIL0030100CWSTamms653Alexander County
TampicoIL1950550CWSTampico689Bureau County, Whiteside County
Tanneron Bay Homeowners AssociationIL0971130CWSVernon Hills256Lake County
Taylor Ridge Elementary SchoolIL3112938NTNCWSTaylor Ridge162Rock Island County
Taylor SpringsIL1350650CWSDieterich724Montgomery County
Taylorville Correctional CenterIL0210010CWSTaylorville1,300Christian County
Tc IndustriesIL3062331NTNCWSCrystal Lake100McHenry County
Teasdale FoodsIL3052241NTNCWSHoopeston125Vermilion County
Tegrant Sonoco Protective SolutionsIL3157479NTNCWSBeecher50Will County
Tennants Shady Oaks SubdivisionIL1615540CWSMilan44Rock Island County
TeutopolisIL0490450CWSTeutopolis2,018Effingham County
ThawvilleIL0750850CWSThawville270Iroquois County
ThayerIL1671250CWSThayer721Sangamon County
The Forge: Lemont QuarriesIL3164624NTNCWSLemont305Cook County
The MeadowsIL1030060CWSDenver238Lee County
The Orchards MhcIL1990120CWSCarterville253Williamson County
The Preserve At Long GroveIL0970310CWSElgin204Lake County
ThebesIL0030150CWSThebes213Alexander County
ThomasboroIL0190950CWSThomasboro1,066Champaign County
ThompsonvilleIL0550500CWSThompsonville486Franklin County
ThomsonIL0150350CWSPeru600Carroll County
Thomson Maximum Security CenterIL0150030CWSThomson2,166Carroll County
ThorntonIL0313090CWSThornton2,386Cook County
Three County PwdIL1195450CWSNew Douglas3,575Madison County
TildenIL1570700CWSTilden1,350Randolph County, Washington County
Timber Brook EstatesIL0735450CWSGeneseo120Henry County
Timber Ridge Mobile EstatesIL1775255CWSFreeport150Stephenson County
Timber Ridge SbdvIL0735470CWSCoal Valley90Henry County
Timberlan SubdivisionIL2035200CWSMetamora93Woodford County
Timberline MhpIL2035225CWSNewton120Woodford County
TiskilwaIL0111050CWSTiskilwa740Bureau County
Titan Tire Coorporation Of FreeportIL3050716NTNCWSFreeport400Stephenson County
ToledoIL0350200CWSToledo1,278Cumberland County
TolucaIL1230250CWSToluca1,348Marshall County
Tom Dempsey Therapeutic Day SchoolIL3156695NTNCWSDixon55Lee County
TonicaIL0991150CWSTonica705LaSalle County
Top Die Casting CoIL3131060NTNCWSSouth Beloit100Winnebago County
ToulonIL1750150CWSToulon1,193Stark County
ToveyIL0210650CWSTovey512Christian County
TowandaIL1131050CWSTowanda480McLean County
Tower HillIL1730500CWSTower Hill500Shelby County
Tower LakesIL0975010CWSVolo1,372Lake County
Tower Ridge SubdivisionIL1615780CWSMilan77Rock Island County
Towners SubdivisionIL0977250CWSMundelein206Lake County
Toyal AmericaIL3149005NTNCWSLockport90Will County
Tpg Pressure, Inc.IL3046318NTNCWSSouth Beloit151Winnebago County
Transport Service CompanyIL3131052NTNCWSLake In The Hills50McHenry County
Travel Centers Of AmericaIL3126383NTNCWSMchenry300Lake County
TremontIL1790700CWSTremont2,114Tazewell County
TrentonIL0270500CWSTrenton2,742Clinton County
Triangle Manufactured Home CommunityIL0374865CWSArlington Heights124DeKalb County
Trinity Lutheran SchoolIL3022061NTNCWSRed Bud80Randolph County
Tuckaway Peoria LlcIL2035050CWSGermantown Hills98Woodford County
Twin Orchard Country ClubIL3014944NTNCWSLong Grove450Lake County
Uaw Senior Citizens CenterIL1795030CWSPekin240Tazewell County
UllinIL1530350CWSUllin496Pulaski County
UnionIL1110900CWSUnion594McHenry County
Union-York Water DistrictIL0235400CWSWest Union600Clark County
United Regional Water CoopIL1670260CWSDieterich43Sangamon County
United School District 304IL3036079NTNCWSMonmouth480Warren County
Unity Water CorporationIL1315300CWSSherrard93Mercer County
University Flats MhpIL1190260CWSWashington203Madison County
UrsaIL0010700CWSUrsa626Adams County
Us Silica Ottawa South PitIL3163188NTNCWSOttawa35LaSalle County
ValierIL0550600CWSValier1,182Franklin County
Valley Hi Nursing HomeIL1115189CWSVolo125McHenry County
Valley View EstatesIL1631150CWSFarmington Hills580St. Clair County
Valley View ManorIL0195865CWSRantoul120Champaign County
Valley View SchoolIL3064782NTNCWSMchenry300McHenry County
Valley View Subdivision (Dekalb)IL0375200CWSKingston120DeKalb County
Valley View Subdivision (Woodford)IL2030010CWSEast Peoria100Woodford County
Van Drunen FarmsIL3131524NTNCWSMomence50Kankakee County
Van Orin Water CompanyIL0115000CWSVan Orin120Bureau County
VarnaIL1230300CWSPeru342Marshall County
Venado Lakes-Argyll Water AssociationIL1795050CWSDelavan215Tazewell County
VeoliaIL3142026NTNCWSPlainfield95Will County
VergennesIL0770550CWSVergennes648Jackson County
VermilionIL0450400CWSVermilion250Edgar County
Vermilion Grove WaterworksIL1835050CWSRidge Farm160Vermilion County
VermontIL0570950CWSVermont738Fulton County
Versa Press IncIL3061176NTNCWSEast Peoria200Woodford County
VersaillesIL0090200CWSVersailles478Brown County
VictoriaIL0950550CWSVictoria268Knox County
Victory Christian CenterIL3150581NTNCWSBloomington325McLean County
ViennaIL0870350CWSVienna1,618Johnson County
Vienna Correctional CenterIL0875510CWSVienna501Johnson County
Village Green Mobile Home ParkIL1195350CWSCrofton188Madison County
ViolaIL1310450CWSViola869Mercer County
VirginiaIL0170250CWSVirginia1,514Cass County
Vvf LlcIL3077842NTNCWSMontgomery75Kane County
W G Murray Development CenterIL1215510CWSCentralia290Marion County
Wadsworth Oaks SubdivisionIL0977320CWSWadsworth185Lake County
WaggonerIL1350700CWSWaggoner186Montgomery County
Wallace Consol Comm SchoolIL3096123NTNCWSOttawa250LaSalle County
WalnutIL0111100CWSWalnut1,311Bureau County
Walnut Grove MhcIL0195425CWSMarion40Champaign County
Walnut HillIL1210600CWSCentralia1,180Marion County
WaltonvilleIL0810400CWSMt. Vernon1,901Jefferson County
WamacIL1214920CWSCentralia1,030Clinton County, Marion County
WapellaIL0390250CWSWapella513De Witt County
WarrenIL0850500CWSWarren1,323Jo Daviess County
WarrensburgIL1150500CWSWarrensburg1,230Macon County
WarsawIL0670650CWSWarsaw1,480Hancock County
WashburnIL2034940CWSWashburn1,032Woodford County
Washington MillsIL3117408NTNCWSHennepin65Putnam County
WatagaIL0950600CWSWataga965Knox County
Watch E Kee Manufactured Home CommunityIL0755365CWSMilford138Iroquois County
Water WerksIL1615130CWSCoal Valley43Rock Island County
WatermanIL0370600CWSWaterman1,497DeKalb County
Waubonsee Community CollegeIL3071324NTNCWSSugar Grove2,000Kane County
Waukegan Corporate AviationIL3129569NTNCWSWaukegan50Lake County
WaverlyIL1370450CWSWaverly1,194Morgan County
Wayne CityIL1910450CWSWayne City1,239Wayne County
Wayne SchoolIL3037390NTNCWSElgin625DuPage County
WaynesvilleIL0390300CWSWaynesville381De Witt County
Weatherstone Lakes MhpIL0312800CWSPhoenix190Cook County
Wedron Silica 2IL3157594NTNCWSWedron25LaSalle County
Wedron Silica Pit BuildingIL3162883NTNCWSWedron30LaSalle County
Wedron Silica Sand CompanyIL3137232NTNCWSWedron29LaSalle County
Wedron Silica ScreenhouseIL3158873NTNCWSWedron25LaSalle County
Wedron Silica WarehouseIL3158881NTNCWSWedron25LaSalle County
WeldonIL0390350CWSClinton404De Witt County
WellingtonIL0750950CWSMilford206Iroquois County
Wells ConcreteIL3163162NTNCWSCrystal Lake40McHenry County
WenonaIL1234950CWSWenona974Marshall County
West BrooklynIL1030550CWSWest Brooklyn131Lee County
West CityIL0550650CWSWest City664Franklin County
West Hills Shopping CenterIL3152835NTNCWSElmhurst104Boone County
West Oak Middle SchoolIL3086850NTNCWSAntioch350Lake County
West PointIL0670700CWSWest Point248Hancock County
West Prairie Water Co-OpIL1090030CWSMacomb2,395McDonough County
West Prairie Water CompanyIL0410030CWSArthur3,073Douglas County
West SalemIL0470200CWSWest Salem819Edwards County
West Shore Park SubdivisionIL0977370CWSMundelein590Lake County
West Shoreland SubdivisionIL0977050CWSMundelein189Lake County
West Side MhpIL0395225CWSClinton71De Witt County
Western Il Correctional CenterIL0090010CWSMt. Sterling1,600Brown County
Western Wayne Water DistrictIL1910010CWSWayne City3,253Jefferson County, Wayne County
WestfieldIL0230200CWSWestfield678Clark County
Westwind EstatesIL1135265CWSPontiac120McLean County
WestwoodIL1670190CWSSpringfield44Sangamon County
Westwood PlaceIL1670210CWSSpringfield152Sangamon County
Wheatland SchoolIL3024943NTNCWSNaperville116Will County
Wheaton Franciscan SistersIL3165134NTNCWSWheaton80DuPage County
Whispering Hills MhpIL1610170CWSMoline100Rock Island County
Whispering Lakes Water System, Inc.IL0970220CWSNorthbrook375Lake County
White CityIL1171150CWSMt. Olive485Macoupin County
White HallIL0610400CWSWhite Hall2,313Greene County
White Heath WaterworksIL1475050CWSWhite Heath685Piatt County
White Oaks Estates Water Assoc., Inc.IL1035050CWSDixon410Lee County, Ogle County
Whole Foods Mart Kildeer WellIL3156950NTNCWSWaukegan250Lake County
Wienen EstatesIL0850030CWSGalena95Jo Daviess County
Wildwood EstatesIL0995265CWSOrem1,001LaSalle County
Will Co Forest Preserve DistIL3146084NTNCWSJoliet50Will County
WilliamsfieldIL0950650CWSWilliamsfield647Knox County
WillisvilleIL1450300CWSWillisville799Perry County
Willow Creek North MhpIL1135130CWSBloomington250McLean County
Willow Haven MhpIL0730410CWSNew York270Henry County
Willow HillIL0790300CWSWillow Hill172Jasper County
Willoway Terrace MhpIL0317595CWSChicago900Cook County
WilsonvilleIL1171200CWSWilsonville536Macoupin County
WinchesterIL1710350CWSWinchester1,589Pike County, Scott County
Windcrest SubdivisionIL0730040CWSCoal Valley49Henry County
Winding Creek EstatesIL1615850CWSTaylor Ridge120Rock Island County
Windmill EstatesIL0910070CWSMomence65Iroquois County, Kankakee County
WindsorIL1730550CWSWindsor1,200Shelby County
Windwood Water System, Inc.IL0955040CWSGalesburg185Knox County
WinnebagoIL2010500CWSWinnebago2,940Winnebago County
Winnebago County Rock 39IL3159780NTNCWSRockford25Winnebago County
Winnebago LandfillIL3165829NTNCWSRockford25Winnebago County
WinslowIL1770550CWSFreeport350Stephenson County
Wm W Fox Development CenterIL1055520CWSDwight174Livingston County
Wolf Ridge Well CorporationIL0735120CWSColona95Henry County
Wonder Lake (Niu)IL1115850CWSWonder Lake1,950McHenry County
Wood Dale EstatesIL0437245CWSMelrose Park145DuPage County
WoodhullIL0730750CWSWoodhull771Henry County
WoodlandIL0751000CWSWoodland319Iroquois County
Woodland A And B MhpIL1617925CWSDixon490Rock Island County
Woodland Acres MhcIL0195310CWSBlue Island230Champaign County
Woodland Acres MhpIL1675185CWSErlanger464Sangamon County
Woodlawn Middle/Country Meadow ElemIL3138792NTNCWSBuffalo Grove1,100Lake County
WordenIL1191200CWSGreenville1,096Madison County
Wrex TvIL3046706NTNCWSRockford25Winnebago County
Wtvo TvIL3046565NTNCWSRockford25Winnebago County
WyanetIL0111150CWSWyanet886Bureau County
Wynstone Water CompanyIL0970080CWSGeneva1,424Lake County
WyomingIL1750200CWSWyoming1,300Stark County
Yates CityIL0950700CWSYates City828Knox County
York Township Water SystemIL0430010CWSDarien1,423DuPage County
Youngs Hillcrest MhpIL0190040CWSLudlow34Champaign County
ZeiglerIL0550750CWSZeigler1,774Franklin County
Zutat Feed SolutionsIL3165225NTNCWSChatsworth30Livingston County