Results from entry points (water leaving treatment, not household taps) of public water systems sampled under EPA's Fifth Unregulated Contaminant Monitoring Rule. Click a county to see every water system serving it, or turn on service areas and click a location to see the systems that serve that spot.
230 of the 1,367 public water systems listed for Indiana were sampled. Sorted by the highest single result relative to EPA's 2024 limits. Each name links to a page with all of that system's results. All 1,367 Indiana systems, including those not tested · Download all Indiana results (CSV, gzip)
| System | PWSID | City | Population | PFOA (ppt) | PFOS (ppt) | HI | Highest single result |
|---|---|---|---|---|---|---|---|
| Marysville Otisco Nabb Water Corp. | IN5210006 | Otisco | 6,813 | 14.5 | <MRL | 0 | PFOA ≥ 3 × its limit |
| Indiana American Water - Charlestown | IN5210003 | Greenwood | 8,658 | 13.4 | <MRL | 0 | PFOA ≥ 3 × its limit |
| Brown County Water Utility | IN5207001 | Morgantown | 15,368 | 12.9 | 10.5 | 0.002 | PFOA ≥ 3 × its limit |
| South Bend Water Works | IN5271014 | South Bend | 115,000 | 10 | <MRL | 2.564 | Hazard Index 1–3 × its limit |
| Pike-Gibson Water, Inc. | IN5263003 | Oakland City | 10,000 | 7.9 | <MRL | 0.532 | PFOA 1–3 × its limit |
| Greenville Water Utility | IN5222004 | Greenville | 4,920 | 7.2 | <MRL | 0.002 | PFOA 1–3 × its limit |
| West Terre Haute Water | IN5284015 | West Terre Haute | 4,075 | <MRL | 7.1 | 0.352 | PFOS 1–3 × its limit |
| Palmyra Water Works | IN5231004 | Palmyra | 4,425 | 6.5 | <MRL | 0 | PFOA 1–3 × its limit |
| Hanover Water Department | IN5239003 | Hanover | 2,597 | 6.3 | 4.1 | 0.003 | PFOA 1–3 × its limit |
| Jackson County Water Utility | IN5236003 | Brownstown | 13,667 | 6 | 5.1 | 0 | PFOA 1–3 × its limit |
| Elkhart Public Works And Utilities | IN5220008 | Elkhart | 46,455 | 5.2 | <MRL | 0.88 | PFOA 1–3 × its limit |
| Indiana American Water - Terre Haute | IN5284012 | Greenwood | 67,765 | <MRL | 5.2 | 0.002 | PFOS 1–3 × its limit |
| Ramsey Water Company, Inc. | IN5231005 | Ramsey | 16,475 | 5.2 | <MRL | 0 | PFOA 1–3 × its limit |
| Gibson Water Authority | IN5226009 | Haubstadt | 4,835 | 4.9 | <MRL | 0 | PFOA 1–3 × its limit |
| Madison Water Department | IN5239006 | Madison | 15,323 | 4.6 | <MRL | 0.004 | PFOA 1–3 × its limit |
| Tell City Water Department | IN5262004 | Tell City | 9,315 | 4.3 | <MRL | 0 | PFOA 1–3 × its limit |
| Mishawaka Utilities | IN5271009 | Mishawaka | 49,675 | <MRL | 4.2 | 0.56 | PFOS 1–3 × its limit |
| Anderson Water Department | IN5248002 | Anderson | 55,212 | <MRL | 4.1 | 0 | PFOS 1–3 × its limit |
| University Of Notre Dame | IN5271020 | Notre Dame | 7,400 | 4.1 | <MRL | 0.002 | PFOA 1–3 × its limit |
| Mount Vernon Water Works | IN5265006 | Mount Vernon | 6,426 | 4 | <MRL | 0.53 | PFOA 1–3 × its limit |
| Sellersburg Water Department | IN5210010 | Sellersburg | 15,655 | 4 | <MRL | 0 | PFOA 1–3 × its limit |
| Purdue Univ. Water Works | IN5279015 | West Lafayette | 50,000 | <MRL | <MRL | 0.689 | Hazard Index below its limit |
| Clinton Water Utility | IN5283004 | Clinton | 4,773 | <MRL | <MRL | 0.562 | Hazard Index below its limit |
| Columbus Municipal Utility | IN5203002 | Columbus | 51,122 | <MRL | <MRL | 0.005 | Hazard Index below its limit |
| Laporte Water Works | IN5246017 | Laporte | 22,197 | <MRL | <MRL | 0.004 | Hazard Index below its limit |
| Southwestern Bartholomew Water Corp. | IN5203008 | Columbus | 8,652 | <MRL | <MRL | 0.004 | Hazard Index below its limit |
| Dupont Water Company | IN5240004 | Commiskey | 3,865 | <MRL | <MRL | 0.003 | Hazard Index below its limit |
| Indiana American Water - Warsaw | IN5243030 | Greenwood | 13,835 | <MRL | <MRL | 0.003 | Hazard Index below its limit |
| Napoleon Community Rural Water Corp. | IN5269007 | Napoleon | 5,564 | <MRL | <MRL | 0.003 | Hazard Index below its limit |
| Angola Water Department | IN5276001 | Angola | 9,340 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Canaan Utilities | IN5239001 | Canaan | 4,428 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Citizens Water - Indianapolis | IN5249004 | Indianapolis | 880,345 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Citizens Water - Whitestown | IN5206014 | Indianapolis | 15,695 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Indiana American Water - Crawfordsville | IN5254005 | Greenwood | 15,930 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Plainfield Water Works | IN5232020 | Plainfield | 34,477 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Bargersville Water Department | IN5241001 | Bargersville | 34,418 | <MRL | <MRL | 0 | Other PFAS detected |
| Batesville Water Utility | IN5269001 | Batesville | 7,323 | <MRL | <MRL | 0 | Other PFAS detected |
| Brownsburg Water Works | IN5232002 | Brownsburg | 31,250 | <MRL | <MRL | 0 | Other PFAS detected |
| Danville Water Works | IN5232004 | Danville | 10,500 | <MRL | <MRL | 0 | Other PFAS detected |
| Fort Wayne - 3 Rivers Filtration Plant | IN5202020 | Fort Wayne | 269,994 | <MRL | <MRL | 0 | Other PFAS detected |
| German Township Water District Inc. | IN5282003 | Evansville | 12,890 | <MRL | <MRL | 0 | Other PFAS detected |
| Goshen Water Utility | IN5220009 | Goshen | 32,267 | <MRL | <MRL | 0 | Other PFAS detected |
| Indiana American Water - Johnson County | IN5241005 | Greenwood | 86,813 | <MRL | <MRL | 0 | Other PFAS detected |
| Indiana American Water - Noblesville | IN5229015 | Greenwood | 45,575 | <MRL | <MRL | 0 | Other PFAS detected |
| Ireland Utilities, Inc. | IN5219008 | Ireland | 4,395 | <MRL | <MRL | 0 | Other PFAS detected |
| Jasper Municipal Water Utility | IN5219009 | Jasper | 17,440 | <MRL | <MRL | 0 | Other PFAS detected |
| Lippert Components (Plant #30) | IN2201093 | Rochester | 200 | <MRL | <MRL | 0 | Other PFAS detected |
| New Haven Water Department | IN5202009 | New Haven | 15,700 | <MRL | <MRL | 0 | Other PFAS detected |
| New Pekin Water Utility | IN5288004 | Pekin | 2,150 | <MRL | <MRL | 0 | Other PFAS detected |
| Pittsboro Water Company | IN5232019 | Brownsburg | 4,113 | <MRL | <MRL | 0 | Other PFAS detected |
| Plainfield Re-Entry Educational Facility | IN5232007 | Plainfield | 4,500 | <MRL | <MRL | 0 | Other PFAS detected |
| Scottsburg Water Department | IN5272001 | Scottsburg | 7,369 | <MRL | <MRL | 0 | Other PFAS detected |
| South Park Business Center | IN2410017 | Indianapolis | 5,167 | <MRL | <MRL | 0 | Other PFAS detected |
| Speedway Water Works | IN5249008 | Speedway | 10,578 | <MRL | <MRL | 0 | Other PFAS detected |
| Whiteland Water Works | IN5241009 | Whiteland | 5,955 | <MRL | <MRL | 0 | Other PFAS detected |
| Aberdeen Pate Water Company, Inc. | IN5258001 | Aurora | 4,787 | <MRL | <MRL | 0 | No PFAS detected |
| Alexandria Water Department | IN5248001 | Alexandria | 5,149 | <MRL | <MRL | 0 | No PFAS detected |
| Apple Valley Utilities, Inc. | IN5245001 | Indianapolis | 712 | <MRL | <MRL | 0 | No PFAS detected |
| Auburn Water Department | IN5217001 | Auburn | 12,800 | <MRL | <MRL | 0 | No PFAS detected |
| Aurora Utilities | IN5215001 | Aurora | 6,415 | <MRL | <MRL | 0 | No PFAS detected |
| B&B Water Project, Inc. | IN5253001 | Bloomington | 4,695 | <MRL | <MRL | 0 | No PFAS detected |
| Bbp Water Company | IN5260001 | Spencer | 9,903 | <MRL | <MRL | 0 | No PFAS detected |
| Bedford City Utilities | IN5247001 | Bedford | 14,000 | <MRL | <MRL | 0 | No PFAS detected |
| Berne Water Department | IN5201001 | Berne | 4,388 | <MRL | <MRL | 0 | No PFAS detected |
| Bicknell Municipal Utilities | IN5242001 | Bicknell | 4,064 | <MRL | <MRL | 0 | No PFAS detected |
| Bluffton Utilities Water Dept | IN5290001 | Bluffton | 10,298 | <MRL | <MRL | 0 | No PFAS detected |
| Borden Tri-County Region | IN5210002 | Borden | 11,000 | <MRL | <MRL | 0 | No PFAS detected |
| Brazil City Water Works | IN5211001 | Brazil | 12,000 | <MRL | <MRL | 0 | No PFAS detected |
| Bremen Water Department | IN5250003 | Bremen | 4,516 | <MRL | <MRL | 0 | No PFAS detected |
| Camp Atterbury | IN5241015 | Edinburgh | 5,300 | <MRL | <MRL | 0 | No PFAS detected |
| Carmel Water Department | IN5229004 | Carmel | 99,927 | <MRL | <MRL | 0 | No PFAS detected |
| Cedar Lake Water Works | IN5245047 | Cedar Lake | 4,600 | <MRL | <MRL | 0 | No PFAS detected |
| Chandler Water Works Department | IN5287002 | Chandler | 20,120 | <MRL | <MRL | 0 | No PFAS detected |
| Charlestown/River Ridge | IN2100018 | Jeffersonville | 10,500 | <MRL | <MRL | 0 | No PFAS detected |
| Cicero Water Department | IN5229005 | Elwood | 5,607 | <MRL | <MRL | 0 | No PFAS detected |
| Citizens Water - Morgan | IN5255019 | Indianapolis | 5,705 | <MRL | <MRL | 0 | No PFAS detected |
| Citizens Water Of Westfield, Llc | IN5229009 | Indianapolis | 61,493 | <MRL | <MRL | 0 | No PFAS detected |
| City Of Bloomington Utilities | IN5253002 | Bloomington | 83,000 | <MRL | <MRL | 0 | No PFAS detected |
| City Of Boonville | IN5287001 | Boonville | 10,260 | <MRL | <MRL | 0 | No PFAS detected |
| City Of Greendale Utilities | IN5215003 | Greendale | 5,092 | <MRL | <MRL | 0 | No PFAS detected |
| City Of Lawrence Utilities | IN5249005 | Indianapolis | 49,000 | <MRL | <MRL | 0 | No PFAS detected |
| Columbia City Water Department | IN5292004 | Columbia City | 9,892 | <MRL | <MRL | 0 | No PFAS detected |
| Connersville Utilities | IN5221001 | Connersville | 13,282 | <MRL | <MRL | 0 | No PFAS detected |
| Cordry Sweetwater Conservancy District | IN5207004 | Nineveh | 3,425 | <MRL | <MRL | 0 | No PFAS detected |
| Corydon Water Works | IN5231001 | Corydon | 5,716 | <MRL | <MRL | 0 | No PFAS detected |
| Crown Point Water Works | IN5245008 | Crown Point | 30,000 | <MRL | <MRL | 0 | No PFAS detected |
| Cuii - Indiana Water Service | IN5245057 | Crown Point | 4,200 | <MRL | <MRL | 0 | No PFAS detected |
| Cuii - Twin Lakes | IN5245046 | Crown Point | 8,000 | <MRL | <MRL | 0 | No PFAS detected |
| Daviess County Rural Water | IN5214002 | Washington | 7,969 | <MRL | <MRL | 0 | No PFAS detected |
| Decatur Water Department | IN5201002 | Decatur | 9,900 | <MRL | <MRL | 0 | No PFAS detected |
| Dubois Water Utilities | IN5219002 | Dubois | 9,078 | <MRL | <MRL | 0 | No PFAS detected |
| Dyer Water Department | IN5245011 | Dyer | 16,800 | <MRL | <MRL | 0 | No PFAS detected |
| East Chicago Water Works | IN5245012 | East Chicago | 26,370 | <MRL | <MRL | 0 | No PFAS detected |
| East Fork Water | IN5251004 | Shoals | 3,485 | <MRL | <MRL | 0 | No PFAS detected |
| East Lawrence Water Authority | IN5247002 | Bedford | 8,000 | <MRL | <MRL | 0 | No PFAS detected |
| East Monroe Water Corporation | IN5253003 | Bloomington | 3,648 | <MRL | <MRL | 0 | No PFAS detected |
| East Tippecanoe Middle School | IN2790009 | Lafayette | 589 | <MRL | <MRL | 0 | No PFAS detected |
| East Washington Rural Water | IN5288002 | Salem | 8,613 | <MRL | <MRL | 0 | No PFAS detected |
| Eastern Bartholomew Water | IN5203004 | Taylorsville | 13,547 | <MRL | <MRL | 0 | No PFAS detected |
| Eastern Heights Utilities | IN5228003 | Bloomfield | 19,028 | <MRL | <MRL | 0 | No PFAS detected |
| Edinburgh Water Utility | IN5241002 | Edinburgh | 4,480 | <MRL | <MRL | 0 | No PFAS detected |
| Edwardsville Water Corporation | IN5222001 | Georgetown | 10,442 | <MRL | <MRL | 0 | No PFAS detected |
| Ellettsville Water Works | IN5253004 | Ellettsville | 14,500 | <MRL | <MRL | 0 | No PFAS detected |
| Elwood Water & Sewage | IN5248007 | Elwood | 8,586 | <MRL | <MRL | 0 | No PFAS detected |
| Evansville Water Utility | IN5282002 | Henderson | 182,444 | <MRL | <MRL | 0 | No PFAS detected |
| Fairview Park Water Utilities | IN5283006 | Clinton | 1,386 | <MRL | <MRL | 0 | No PFAS detected |
| Fayette Township Water Assn. | IN5284002 | Clinton | 2,000 | <MRL | <MRL | 0 | No PFAS detected |
| Finch Newton Water, Inc. | IN5274003 | Chrisney | 2,672 | <MRL | <MRL | 0 | No PFAS detected |
| Floyds Knobs Water Company, Inc. | IN5222002 | Greenville | 6,690 | <MRL | <MRL | 0 | No PFAS detected |
| Fort Branch Water Department | IN5226001 | Fort Branch | 4,020 | <MRL | <MRL | 0 | No PFAS detected |
| Fortville Water Works | IN5230003 | Fortville | 7,638 | <MRL | <MRL | 0 | No PFAS detected |
| Frankfort Water Works | IN5212003 | Frankfort | 16,422 | <MRL | <MRL | 0 | No PFAS detected |
| Franklin County Water Association | IN5224002 | Brookville | 8,200 | <MRL | <MRL | 0 | No PFAS detected |
| Galveston Water Works | IN5209003 | Galveston | 1,258 | <MRL | <MRL | 0 | No PFAS detected |
| Garrett Water Utility | IN5217004 | Garrett | 6,390 | <MRL | <MRL | 0 | No PFAS detected |
| Gas City Water Department | IN5227006 | Gas City | 6,000 | <MRL | <MRL | 0 | No PFAS detected |
| Greencastle Department Of Water | IN5267004 | Greencastle | 12,699 | <MRL | <MRL | 0 | No PFAS detected |
| Greenfield Water Utility | IN5230004 | Greenfield | 26,671 | <MRL | <MRL | 0 | No PFAS detected |
| Greensburg Municipal Water Works | IN5216002 | Greensburg | 12,650 | <MRL | <MRL | 0 | No PFAS detected |
| Griffith Water Department | IN5245019 | Griffith | 16,893 | <MRL | <MRL | 0 | No PFAS detected |
| Hammond Water Works Department | IN5245020 | Hammond | 78,384 | <MRL | <MRL | 0 | No PFAS detected |
| Hartford City Water Works | IN5205002 | Hartford City | 5,600 | <MRL | <MRL | 0 | No PFAS detected |
| Hebron Water Department | IN5264009 | Hebron | 3,724 | <MRL | <MRL | 0 | No PFAS detected |
| Highland Water Works | IN5245021 | Highland | 23,984 | <MRL | <MRL | 0 | No PFAS detected |
| Hill Water Corporation | IN5255021 | Mooresville | 8,200 | <MRL | <MRL | 0 | No PFAS detected |
| Hoosier Hills Regional Water District | IN5269002 | Milan | 8,660 | <MRL | <MRL | 0 | No PFAS detected |
| Huntertown Water Works | IN5202007 | Fort Wayne | 14,058 | <MRL | <MRL | 0 | No PFAS detected |
| Huntingburg Municipal Water | IN5219007 | Huntingburg | 6,526 | <MRL | <MRL | 0 | No PFAS detected |
| Huntington Water Department | IN5235005 | Huntington | 17,300 | <MRL | <MRL | 0 | No PFAS detected |
| Indiana American Water - Georgetown | IN5222003 | Greenwood | 3,605 | <MRL | <MRL | 0 | No PFAS detected |
| Indiana American Water - Kokomo | IN5234007 | Greenwood | 59,313 | <MRL | <MRL | 0 | No PFAS detected |
| Indiana American Water - Lowell | IN5245029 | Greenwood | 11,908 | <MRL | <MRL | 0 | No PFAS detected |
| Indiana American Water - Mooresville | IN5255006 | Greenwood | 10,083 | <MRL | <MRL | 0 | No PFAS detected |
| Indiana American Water - Muncie | IN5218012 | Greenwood | 74,030 | <MRL | <MRL | 0 | No PFAS detected |
| Indiana American Water - Newburgh | IN5287004 | Newburgh | 22,215 | <MRL | <MRL | 0 | No PFAS detected |
| Indiana American Water - Northwest | IN5245015 | Greenwood | 210,510 | <MRL | <MRL | 0 | No PFAS detected |
| Indiana American Water - Richmond | IN5289012 | Greenwood | 41,485 | <MRL | <MRL | 0 | No PFAS detected |
| Indiana American Water - S. Indiana | IN5210005 | Greenwood | 104,445 | <MRL | <MRL | 0 | No PFAS detected |
| Indiana American Water - Seymour | IN5236005 | Greenwood | 20,725 | <MRL | <MRL | 0 | No PFAS detected |
| Indiana American Water - Shelbyville | IN5273002 | Greenwood | 19,093 | <MRL | <MRL | 0 | No PFAS detected |
| Indiana American Water - Sullivan | IN5277009 | Greenwood | 6,598 | <MRL | <MRL | 0 | No PFAS detected |
| Indiana American Water - Wabash | IN5285003 | Greenwood | 12,140 | <MRL | <MRL | 0 | No PFAS detected |
| Indiana American Water - West Lafayette | IN5279020 | Greenwood | 35,533 | <MRL | <MRL | 0 | No PFAS detected |
| Indiana American Water - Winchester | IN5268003 | Greenwood | 5,405 | <MRL | <MRL | 0 | No PFAS detected |
| Ingalls Water Company | IN5248012 | Ingalls | 7,600 | <MRL | <MRL | 0 | No PFAS detected |
| Jasonville Water Department | IN5228004 | Jasonville | 3,660 | <MRL | <MRL | 0 | No PFAS detected |
| Jennings Water, Inc. | IN5240006 | North Vernon | 8,370 | <MRL | <MRL | 0 | No PFAS detected |
| Kendallville Water Department | IN5257008 | Kendallville | 10,300 | <MRL | <MRL | 0 | No PFAS detected |
| Kent Water Company | IN5239004 | Hanover | 6,750 | <MRL | <MRL | 0 | No PFAS detected |
| Knox Water Works | IN5275002 | Knox | 3,700 | <MRL | <MRL | 0 | No PFAS detected |
| L-M-S Conservancy District | IN5215007 | Aurora | 5,375 | <MRL | <MRL | 0 | No PFAS detected |
| Lafayette Water Works | IN5279013 | Lafayette | 70,835 | <MRL | <MRL | 0 | No PFAS detected |
| Laville Jr. & Sr. High School | IN2710815 | Lakeville | 675 | <MRL | <MRL | 0 | No PFAS detected |
| Lawrenceburg Municipal Utilities | IN5215006 | Lawrenceburg | 5,000 | <MRL | <MRL | 0 | No PFAS detected |
| Lebanon Utilities | IN5206003 | Lebanon | 16,840 | <MRL | <MRL | 0 | No PFAS detected |
| Ligonier Water Works | IN5257010 | Ligonier | 4,405 | <MRL | <MRL | 0 | No PFAS detected |
| Linton Municipal Water Utility | IN5228005 | Linton | 7,430 | <MRL | <MRL | 0 | No PFAS detected |
| Logansport Municipal Utility-Well Field | IN5209012 | Logansport | 18,369 | <MRL | <MRL | 0 | No PFAS detected |
| Loogootee Water Works | IN5251005 | Loogootee | 2,800 | <MRL | <MRL | 0 | No PFAS detected |
| Marion City Water Works | IN5227014 | Marion | 28,363 | <MRL | <MRL | 0 | No PFAS detected |
| Martinsville Water Utility | IN5255009 | Martinsville | 15,000 | <MRL | <MRL | 0 | No PFAS detected |
| Michigan City Department Of Water Works | IN5246020 | Michigan City | 33,996 | <MRL | <MRL | 0 | No PFAS detected |
| Middlebury Water Department | IN5220014 | Middlebury | 3,420 | <MRL | <MRL | 0 | No PFAS detected |
| Mitchell Water Department | IN5247003 | Mitchell | 5,000 | <MRL | <MRL | 0 | No PFAS detected |
| Monticello Water Works | IN5291011 | Monticello | 5,300 | <MRL | <MRL | 0 | No PFAS detected |
| Morgan County Rural Water Company | IN5255010 | Martinsville | 8,800 | <MRL | <MRL | 0 | No PFAS detected |
| Munster Water Company | IN5245031 | Munster | 23,894 | <MRL | <MRL | 0 | No PFAS detected |
| Nappanee Water Utility | IN5220016 | Nappanee | 6,800 | <MRL | <MRL | 0 | No PFAS detected |
| Nashville Water Department | IN5207002 | Nashville | 3,315 | <MRL | <MRL | 0 | No PFAS detected |
| Naval Weapons Station, Crane | IN5251003 | Crane | 6,538 | <MRL | <MRL | 0 | No PFAS detected |
| New Castle Utilities | IN5233011 | New Castle | 19,880 | <MRL | <MRL | 0 | No PFAS detected |
| New Chicago Water Works | IN5245032 | Hobart | 5,500 | <MRL | <MRL | 0 | No PFAS detected |
| North Dearborn Water Authority | IN5215008 | West Harrison | 5,775 | <MRL | <MRL | 0 | No PFAS detected |
| North Lawrence Water Authority | IN5247004 | Bedford | 11,625 | <MRL | <MRL | 0 | No PFAS detected |
| North Manchester Water Department | IN5285009 | North Manchester | 6,100 | <MRL | <MRL | 0 | No PFAS detected |
| North Vernon Water Department | IN5240008 | North Vernon | 6,500 | <MRL | <MRL | 0 | No PFAS detected |
| Northwest Jasper Regional Water District | IN5237015 | Demotte | 4,054 | <MRL | <MRL | 0 | No PFAS detected |
| Paoli Water Department | IN5259004 | Orleans | 3,677 | <MRL | <MRL | 0 | No PFAS detected |
| Patoka Lake Regional Water | IN5219012 | Dubois | 13,503 | <MRL | <MRL | 0 | No PFAS detected |
| Patriot Water Department | IN5278001 | Patriot | 11,937 | <MRL | <MRL | 0 | No PFAS detected |
| Pendleton Water Company | IN5248019 | Pendleton | 5,758 | <MRL | <MRL | 0 | No PFAS detected |
| Peru Water Department | IN5252016 | Peru | 11,417 | <MRL | <MRL | 0 | No PFAS detected |
| Petersburg Water Company | IN5263002 | Washington | 4,018 | <MRL | <MRL | 0 | No PFAS detected |
| Plymouth Water Department | IN5250010 | Plymouth | 10,241 | <MRL | <MRL | 0 | No PFAS detected |
| Portland Municipal Water Plant | IN5238007 | Portland | 6,209 | <MRL | <MRL | 0 | No PFAS detected |
| Posey Township Water Corp. | IN5288006 | Hardinsburg | 3,500 | <MRL | <MRL | 0 | No PFAS detected |
| Prairie Vista Elementary School | IN2710841 | Mishawaka | 510 | <MRL | <MRL | 0 | No PFAS detected |
| Princes Lake Water Department | IN5241007 | Nineveh | 4,095 | <MRL | <MRL | 0 | No PFAS detected |
| Princeton Water Department | IN5226008 | Princeton | 10,875 | <MRL | <MRL | 0 | No PFAS detected |
| Rensselaer Water Department | IN5237005 | Rensselaer | 6,200 | <MRL | <MRL | 0 | No PFAS detected |
| Reo Water Corporation | IN5274009 | Rockport | 3,875 | <MRL | <MRL | 0 | No PFAS detected |
| Roann Water Works | IN5285013 | Roann | 400 | <MRL | <MRL | 0 | No PFAS detected |
| Robert Fase Senior Center | IN2370881 | Rensselaer | 69 | <MRL | <MRL | 0 | No PFAS detected |
| Rochester Water Department | IN5225006 | Rochester | 6,218 | <MRL | <MRL | 0 | No PFAS detected |
| Rockville Light & Water | IN5261006 | Rockville | 4,195 | <MRL | <MRL | 0 | No PFAS detected |
| Royal Center Water Utility | IN5209008 | Royal Center | 861 | <MRL | <MRL | 0 | No PFAS detected |
| Rural Membership Water Corp. Of Clark Co | IN5210009 | Henryville | 8,630 | <MRL | <MRL | 0 | No PFAS detected |
| Rushville City Utility | IN5270005 | Rushville | 6,800 | <MRL | <MRL | 0 | No PFAS detected |
| Salem Water Works | IN5288005 | Salem | 8,200 | <MRL | <MRL | 0 | No PFAS detected |
| Santa Claus Water Utility | IN5274010 | Santa Claus | 3,683 | <MRL | <MRL | 0 | No PFAS detected |
| Schererville Water Department | IN5245041 | Schererville | 30,000 | <MRL | <MRL | 0 | No PFAS detected |
| Seelyville Water Works | IN5284011 | Seelyville | 6,393 | <MRL | <MRL | 0 | No PFAS detected |
| Shenandoah High School | IN2330018 | New Castle | 540 | <MRL | <MRL | 0 | No PFAS detected |
| Silver Creek Water Corporation | IN5210011 | Sellersburg | 20,028 | <MRL | <MRL | 0 | No PFAS detected |
| Sisters Of Holy Cross-St. Marys College | IN5271025 | Notre Dame | 2,111 | <MRL | <MRL | 0 | No PFAS detected |
| South Harrison Water Corporation | IN5231006 | Corydon | 9,057 | <MRL | <MRL | 0 | No PFAS detected |
| South Lawrence Utilities | IN5247007 | Mitchell | 6,395 | <MRL | <MRL | 0 | No PFAS detected |
| Southern Monroe Water Authority | IN5253007 | Bloomington | 8,877 | <MRL | <MRL | 0 | No PFAS detected |
| Springs Valley Regional Water District | IN5259002 | French Lick | 3,188 | <MRL | <MRL | 0 | No PFAS detected |
| St. John Municipal Water Utility | IN5245043 | St. John | 25,700 | <MRL | <MRL | 0 | No PFAS detected |
| Stucker Fork Water Utility | IN5272002 | Austin | 17,718 | <MRL | <MRL | 0 | No PFAS detected |
| Tennyson Water Utility | IN5287007 | Tennyson | 4,158 | <MRL | <MRL | 0 | No PFAS detected |
| Tipton Utility Service B | IN5280004 | Tipton | 5,200 | <MRL | <MRL | 0 | No PFAS detected |
| Town Of Elizabeth | IN5231007 | Elizabeth | 4,450 | <MRL | <MRL | 0 | No PFAS detected |
| Trail Tree/Midcontinent Inn Inc. | IN2370087 | Winamac | 632 | <MRL | <MRL | 0 | No PFAS detected |
| Tri-Township Water Corporation | IN5215009 | Lawrenceburg | 10,435 | <MRL | <MRL | 0 | No PFAS detected |
| Union City Water Works | IN5268010 | Union City | 3,513 | <MRL | <MRL | 0 | No PFAS detected |
| Upland Water Department | IN5227022 | Upland | 3,308 | <MRL | <MRL | 0 | No PFAS detected |
| Valley Rural Utility Company | IN5215004 | Lawrenceburg | 5,529 | <MRL | <MRL | 0 | No PFAS detected |
| Valparaiso Department Of Water Works | IN5264029 | Valparaiso | 36,000 | <MRL | <MRL | 0 | No PFAS detected |
| Van Buren Water, Inc. | IN5253008 | Bloomington | 6,670 | <MRL | <MRL | 0 | No PFAS detected |
| Vincennes Water Department | IN5242014 | Vincennes | 18,701 | <MRL | <MRL | 0 | No PFAS detected |
| Walkerton Light & Water | IN5271017 | Walkerton | 2,262 | <MRL | <MRL | 0 | No PFAS detected |
| Warren Municipal Water Works | IN5235012 | Warren | 1,237 | <MRL | <MRL | 0 | No PFAS detected |
| Washington Township Water | IN5210015 | New Washington | 4,315 | <MRL | <MRL | 0 | No PFAS detected |
| Washington Twp Water Authority | IN5253009 | Bloomington | 3,825 | <MRL | <MRL | 0 | No PFAS detected |
| Washington Water Works | IN5214007 | Washington | 13,690 | <MRL | <MRL | 0 | No PFAS detected |
| Watson Rural Water Company | IN5210016 | Jeffersonville | 15,750 | <MRL | <MRL | 0 | No PFAS detected |
| Whiting Water Department | IN5245048 | Whiting | 4,900 | <MRL | <MRL | 0 | No PFAS detected |
| Yorktown Water Department | IN5218014 | Yorktown | 6,200 | <MRL | <MRL | 0 | No PFAS detected |
Highest single result for each system; PFOA and PFOS in ppt (ng/L). Entry-point samples, not tap water; screening comparisons, not compliance determinations.