Massachusetts: 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
772Systems listed
263Sampled under UCMR 5
144With PFAS detected
109Highest result at or above a 2024 EPA limit

772 community and non-transient non-community water systems are listed for Massachusetts in EPA SDWIS. 263 were sampled under UCMR 5; 144 of those had at least one PFAS result at or above the reporting level, and 109 had a highest single result at or above a 2024 EPA limit (PFOA or PFOS 4 ppt, or Hazard Index 1).

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 (263)

SystemPWSIDCityPopulationHighest PFOA (ppt)Highest PFOS (ppt)Highest HIHighest single result
Abington/Rockland Joint Wtr. WorksMA4001000Rockland33,3871270.402PFOA ≥ 3 × its limit
Acton Water Supply DistrictMA2002000Acton21,28513.44.90.32PFOA ≥ 3 × its limit
Acushnet Water DepartmentMA4003000Acushnet8,430<MRL<MRL0No PFAS detected
Adams Fire DistrictMA1004000Adams7,945<MRL<MRL0No PFAS detected
Agawam Water DepartmentMA1005000Agawam28,692<MRL<MRL0No PFAS detected
Amesbury Dpw Water Div.MA3007000Amesbury17,366<MRL<MRL0No PFAS detected
Amherst Dpw Water DivisionMA1008000Amherst39,263<MRL<MRL0No PFAS detected
Andover Water DeptMA3009000Andover36,569<MRL<MRL0Other PFAS detected
Aquarion Water Company OxfordMA2226000Millbury7,384<MRL<MRL0Other PFAS detected
Aquarion Water Company, MillburyMA2186000Millbury11,36815.86.20.002PFOA ≥ 3 × its limit
Aquarion Water Company, PinehillsMA4239055Millbury9,478<MRL<MRL0Other PFAS detected
Arlington Water Dept. (Mwra)MA3010000Arlington46,308<MRL<MRL0No PFAS detected
Ash/Win Joint Water AuthorityMA2011004Ashburnham11,394<MRL<MRL0No PFAS detected
Ashburnham Water DepartmentMA2011000Ashburnham3,680<MRL<MRL0No PFAS detected
Ashland Water And Sewer Dept.MA3014000Ashland18,832<MRL<MRL0Other PFAS detected
Athol Dpw Water DivisionMA1015000Athol10,587<MRL<MRL0No PFAS detected
Attleboro Water DeptMA4016000Attleboro46,4616.6120.38PFOS ≥ 3 × its limit
Auburn Water DistrictMA2017000Auburn12,2555.74.70PFOA 1–3 × its limit
Ayer Dpw Water DivisionMA2019000Ayer8,479<MRL<MRL0Other PFAS detected
Barnstable Fire DistrictMA4020000Barnstable5,4004.47.10.36PFOS 1–3 × its limit
Barre Water DepartmentMA2021000Barre2,610<MRL<MRL0No PFAS detected
Bedford Water Dept.MA3023000Bedford14,955<MRL<MRL0No PFAS detected
Belchertown Water DistrictMA1024000Belchertown3,253<MRL<MRL0No PFAS detected
Bellingham Dpw Water Sewer DivisionMA2025000Bellingham16,5564.350.002PFOS 1–3 × its limit
Belmont Water Dept. (Mwra)MA3026000Belmont27,442<MRL<MRL0No PFAS detected
Beverly Water DeptMA3030000Beverly47,461<MRL<MRL0Other PFAS detected
Billerica Water WorksMA3031000Billerica42,1195.5<MRL0.002PFOA 1–3 × its limit
Blackstone Water DepartmentMA2032000Blackstone9,4635.7<MRL0PFOA 1–3 × its limit
Boston Water And Sewer Commission (Mwra)MA3035000Boston675,647<MRL<MRL0No PFAS detected
Bourne Water DistrictMA4036000Pocasset22,500<MRL4.80.76PFOS 1–3 × its limit
Boylston Water DistrictMA2039000Boylston3,3436<MRL0.002PFOA 1–3 × its limit
Braintree Water And Sewer Dept.MA4040000Braintree39,1435.38.50.002PFOS 1–3 × its limit
Brewster Water DepartmentMA4041000Brewster35,000<MRL<MRL0No PFAS detected
Bridgewater Water DepartmentMA4042000Bridgewater28,633970.403PFOA 1–3 × its limit
Brockton Water DepartmentMA4044000Brockton105,788<MRL<MRL0No PFAS detected
Brookline Water And Sewer DivisionMA3046000Brookline63,191<MRL<MRL0No PFAS detected
Burlington Water DeptMA3048000Burlington25,864<MRL<MRL0Other PFAS detected
Buzzards Bay Water DistrictMA4036001Bourne7,700<MRL<MRL0No PFAS detected
Cambridge Water DepartmentMA3049000Cambridge118,2144.8<MRL0PFOA 1–3 × its limit
Canton Water DeptMA4050000Canton22,7665<MRL0PFOA 1–3 × its limit
Centerville Osterville Marstons Mills WdMA4020002Osterville50,0004.9<MRL0.311PFOA 1–3 × its limit
Chatham Water DepartmentMA4055000Chatham30,000<MRL<MRL0No PFAS detected
Chelmsford Water DistrictMA3056000Chelmsford28,7508.97.20.002PFOA 1–3 × its limit
Chelsea Water Dept. (Mwra)MA3057000Chelsea40,787<MRL<MRL0No PFAS detected
Cherry Valley/ Rochdale Water DistrictMA2151001Rochdale3,696<MRL<MRL0Other PFAS detected
Chicopee Water Dept (Mwra)MA1061000Chicopee55,560<MRL<MRL0No PFAS detected
City Of New Bedford DpiMA4201000New Bedford101,079<MRL<MRL0Other PFAS detected
Clinton Water DeptMA2064000Clinton15,428<MRL<MRL0No PFAS detected
Cohasset Water DeptMA4065000Cohasset7,5556.74.50PFOA 1–3 × its limit
Concord Water DeptMA3067000Concord18,7886<MRL0.005PFOA 1–3 × its limit
Cotuit Fire District Water DepartmentMA4020003Cotuit4,938<MRL<MRL0No PFAS detected
Dalton Fire DistrictMA1070000Dalton6,330<MRL<MRL0No PFAS detected
Danvers Water Dept.MA3071000Middleton28,087<MRL5.20PFOS 1–3 × its limit
Dartmouth Water DivisionMA4072000Dartmouth24,6964.250.60.01PFOS ≥ 3 × its limit
Dedham Westwood Water Dist.MA3073000Dedham41,6306.55.10PFOA 1–3 × its limit
Dennis Water DistrictMA4075000South Dennis65,000<MRL<MRL0Other PFAS detected
Devens MassdevelopmentMA2019001Devens6,500<MRL<MRL0Other PFAS detected
Dighton Water DistrictMA4076000North Dighton5,2805.54.10PFOA 1–3 × its limit
Douglas Water DepartmentMA2077000Douglas4,4004<MRL0.002PFOA 1–3 × its limit
Dracut Water Supply DistrictMA3079000Collinsville25,8086.1<MRL0.005PFOA 1–3 × its limit
Dudley Water DepartmentMA2080000Dudley5,515<MRL<MRL0No PFAS detected
Duxbury Water DepartmentMA4082000Duxbury16,3877.5353.102PFOS ≥ 3 × its limit
East Bridgewater Water DeptMA4083000East Bridgewater14,5265.1<MRL0PFOA 1–3 × its limit
East Longmeadow Dpw Water DeptMA1085000East Longmeadow16,358<MRL<MRL0No PFAS detected
Easthampton Water DeptMA1087000Easthampton16,211<MRL<MRL0No PFAS detected
Easton Water DivMA4088000South Easton25,0589.916.30.792PFOS ≥ 3 × its limit
Edgartown Water DepartmentMA4089000Edgartown8,027<MRL<MRL0No PFAS detected
Everett Water Dept. (Mwra)MA3093000Everett49,075<MRL<MRL0No PFAS detected
Fairhaven Water DeptMA4094000Fairhaven15,155<MRL<MRL0No PFAS detected
Fall River Water DepartmentMA4095000Fall River94,000<MRL<MRL0No PFAS detected
Falmouth Water DeptMA4096000Falmouth97,551<MRL<MRL0No PFAS detected
Fitchburg Dpw Division Of Water SupplyMA2097000Fitchburg41,9464.9<MRL0PFOA 1–3 × its limit
Foxboro Water DepartmentMA4099000Foxborough18,7216.36.70.002PFOS 1–3 × its limit
Framingham Water Dept. (Mwra)MA3100000Framingham72,362<MRL<MRL0No PFAS detected
Franklin Water DepartmentMA2101000Franklin33,7064.75.60.54PFOS 1–3 × its limit
Gardner Water DepartmentMA2103000Gardner21,381<MRL<MRL0No PFAS detected
Georgetown Water DepartmentMA3105000Georgetown8,766<MRL<MRL0No PFAS detected
Gloucester Public Utility DivisionMA3107000Gloucester37,440<MRL<MRL0No PFAS detected
Grafton Water DistrictMA2110000Grafton10,9256.96.90.002PFOA 1–3 × its limit
Great Barrington Fire DistMA1113000Great Barrington4,380<MRL<MRL0No PFAS detected
Greenfield Water DepartmentMA1114000Greenfield17,768<MRL<MRL0No PFAS detected
Groton Water DepartmentMA2115000Groton5,017<MRL<MRL0.002Hazard Index below its limit
Groveland Water DepartmentMA3116000Groveland6,5086.3<MRL0PFOA 1–3 × its limit
Hadley Dpw Water DivisionMA1117002Hadley4,819<MRL<MRL0No PFAS detected
Halifax Water DepartmentMA4118000Halifax7,5757.74.80.542PFOA 1–3 × its limit
Hamilton Water DeptMA3119000Hamilton7,67411.111.20.003PFOS 1–3 × its limit
Hanover Water DeptMA4122000Hanover14,9848.911.40.003PFOS 1–3 × its limit
Hanscom AfbMA3023002Hanscom Afb11,789<MRL<MRL0No PFAS detected
Hanson Water DepartmentMA4123000Hanson9,6125.640PFOA 1–3 × its limit
Harwich Water DepartmentMA4126000Harwich39,144<MRL<MRL0No PFAS detected
Hatfield Water DeptMA1127000Hatfield3,164<MRL<MRL0.006Hazard Index below its limit
Haverhill Water DeptMA3128000Haverhill61,277<MRL<MRL0No PFAS detected
Haystack EstatesMA3330019Tyngsborough605.6<MRL0.002PFOA 1–3 × its limit
Holbrook Public Works DeptMA4133000Holbrook11,405711.90.002PFOS 1–3 × its limit
Holden Water Division, DpwMA2134000Holden18,0164.9<MRL0.002PFOA 1–3 × its limit
Holliston Water DepartmentMA2136000Holliston15,1395.36.50.002PFOS 1–3 × its limit
Holyoke Water WorksMA1137000Holyoke37,838<MRL<MRL0No PFAS detected
Hopedale Water DepartmentMA2138000Hopedale6,0176.84.30PFOA 1–3 × its limit
Hopkinton Water DepartmentMA2139000Hopkinton12,6807.2<MRL0.003PFOA 1–3 × its limit
Hudson Water SupplyMA2141000Hudson20,032<MRL<MRL0Other PFAS detected
Hyannis Water System, Town Of BarnstableMA4020004Hyannis35,000<MRL<MRL0Other PFAS detected
Inima Usa / Aquaria LlcMA4076004North Dighton105,643<MRL<MRL0No PFAS detected
Ipswich Dpu Water DeptMA3144000Ipswich13,1387.3<MRL0.002PFOA 1–3 × its limit
Kenwood Water DistrictMA3079001Dracut9,6206.3<MRL0.002PFOA 1–3 × its limit
Kingston Water DepartmentMA4145000Kingston14,715<MRL<MRL0No PFAS detected
Lancaster Water DepartmentMA2147000Lancaster6,000<MRL<MRL0No PFAS detected
Lawrence Water WorksMA3149000Lawrence89,143<MRL<MRL0Other PFAS detected
Lee Water DeptMA1150000Lee5,686<MRL<MRL0No PFAS detected
Lenox Dpw Water DivisionMA1152000Lenox9,800<MRL<MRL0No PFAS detected
Leominster Water DivisionMA2153000Leominster41,6834.3<MRL0PFOA 1–3 × its limit
Lexington Water Dept. (Mwra)MA3155000Lexington34,074<MRL<MRL0No PFAS detected
Lincoln Water DeptMA3157000Lincoln5,5936.45.40.32PFOA 1–3 × its limit
Littleton Water DepartmentMA2158000Littleton9,334<MRL<MRL0No PFAS detected
Longmeadow Water DeptMA1159000Longmeadow15,853<MRL<MRL0No PFAS detected
Lowell Regional Water UtilityMA3160000Lowell120,4184.6<MRL0PFOA 1–3 × its limit
Lunenburg Water DistrictMA2162000Lunenburg7,2195.1<MRL0PFOA 1–3 × its limit
Lynn Water And Sewer CommMA3163000Lynn101,2534.7<MRL0.002PFOA 1–3 × its limit
Lynnfield Center Water DistrictMA3164000Lynnfield8,5256.1<MRL0PFOA 1–3 × its limit
Lynnfield Water Dist. (Mwra)MA3164001Lynnfield4,820<MRL<MRL0No PFAS detected
Malden Water Division (Mwra)MA3165000Malden66,263<MRL<MRL0No PFAS detected
Manchester By The Sea DpwMA3166000Manchester By The Sea5,201124.80.003PFOA ≥ 3 × its limit
Mansfield Water DivisionMA4167000Mansfield21,7974.36.20.312PFOS 1–3 × its limit
Marblehead Water Dept. (Mwra)MA3168000Marblehead20,441<MRL<MRL0No PFAS detected
Marion Water DivisionMA4169000Marion6,119<MRL<MRL0No PFAS detected
Marlborough Dpw Water Div. (Mwra)MA2170000Marlborough41,799<MRL<MRL0No PFAS detected
Marshfield Water DepartmentMA4171000Marshfield34,00074.60.002PFOA 1–3 × its limit
Mashpee Water DistrictMA4172039Mashpee36,922<MRL<MRL0Other PFAS detected
Mattapoisett River Valley W.D.MA4173001Mattapoisett29,600<MRL<MRL0No PFAS detected
Mattapoisett Water DepartmentMA4173000Mattapoisett7,685<MRL<MRL0No PFAS detected
Maynard Dpw, Water DivisionMA2174000Maynard10,7467.14.20.002PFOA 1–3 × its limit
Mci Norfolk/Cedar Junction/WalpoleMA2208001Milford2,200<MRL<MRL0No PFAS detected
Mci ShirleyMA2270001Milford3,500<MRL<MRL0.87Hazard Index below its limit
Medfield Water Dept.MA2175000Medfield12,71376.70.002PFOA 1–3 × its limit
Medford Water Dept. (Mwra)MA3176000Medford61,700<MRL<MRL0No PFAS detected
Medway Water DepartmentMA2177000Medway14,1767.2<MRL0.002PFOA 1–3 × its limit
Melrose Water Division (Mwra)MA3178000Melrose29,938<MRL<MRL0No PFAS detected
Merrimac Water DepartmentMA3180000Merrimac6,9886.9<MRL0PFOA 1–3 × its limit
Methuen Water DeptMA3181000Methuen53,0594<MRL0PFOA 1–3 × its limit
Middleborough Water SupplyMA4182000Middleborough15,3501150.3PFOA 1–3 × its limit
Middleton Water Dept.MA3184000Middleton7,2914.5<MRL0.002PFOA 1–3 × its limit
Milford Water DepartmentMA2185000Milford30,3797.16.60.002PFOA 1–3 × its limit
Millis Water DeptMA2187000Millis9,0556.97.30.005PFOS 1–3 × its limit
Milton Water Dept. (Mwra)MA3189000Milton28,630<MRL<MRL0No PFAS detected
Monson Water And Sewer DeptMA1191000Monson4,222<MRL<MRL0No PFAS detected
Mt Greylock Regional SchoolMA1341010Williamstown930<MRL<MRL0No PFAS detected
Nahant Water Dept. (Mwra)MA3196000Nahant3,334<MRL<MRL0No PFAS detected
Natick Water And Sewer DivisionMA3198000Natick37,00614.337.31.123PFOS ≥ 3 × its limit
Needham Water DeptMA3199000Needham31,6644.650PFOS 1–3 × its limit
Newburyport Water DepartmentMA3206000Newburyport20,335<MRL4.60.002PFOS 1–3 × its limit
Newton Water Dept. (Mwra)MA3207000Newton88,931<MRL<MRL0No PFAS detected
Norfolk Water DivisionMA2208000Norfolk7,60274.50.002PFOA 1–3 × its limit
North Adams Water DeptMA1209000North Adams13,0005.9<MRL0PFOA 1–3 × its limit
North Andover Water DeptMA3210000North Andover30,915<MRL<MRL0No PFAS detected
North Attleboro Water DeptMA4211000North Attleborough31,410980.402PFOA 1–3 × its limit
North Brookfield Water DepartmentMA2212000North Brookfield3,863<MRL<MRL0No PFAS detected
North Chelmsford Water DistMA3056002North Chelmsford7,660<MRL<MRL0No PFAS detected
North Raynham Water DistrictMA4245002Raynham3,902<MRL<MRL0Other PFAS detected
North Reading Water Dept.MA3213000North Reading16,379<MRL<MRL0Other PFAS detected
North Sagamore Water DistrictMA4036002Sagamore Beach4,668<MRL<MRL0Other PFAS detected
Northampton Water DivisionMA1214000Northampton29,571<MRL<MRL0No PFAS detected
Northborough Water Department (Mwra)MA2215000Northborough13,551<MRL<MRL0No PFAS detected
Northbridge Water DivisionMA2216006Northbridge8,127<MRL<MRL0No PFAS detected
Norton Water DepartmentMA4218000Norton19,1618.840.64PFOA 1–3 × its limit
Norwell Water DepartmentMA4219000Norwell11,4959.918.40.004PFOS ≥ 3 × its limit
Norwood Water Dept. (Mwra)MA4220000Norwood29,909<MRL<MRL0No PFAS detected
Oak Bluffs Water DistrictMA4221000Oak Bluffs24,000<MRL<MRL0Other PFAS detected
Onset Fire Districtwater Dept.MA4310003Onset5,392<MRL7.10PFOS 1–3 × its limit
Orange Water DeptMA1223000Orange6,526<MRL<MRL0.48Hazard Index below its limit
Orleans Water DepartmentMA4224000Orleans17,460<MRL<MRL0No PFAS detected
Otis Air National Guard BaseMA4096001Buzzards Bay6,000<MRL<MRL0No PFAS detected
Palmer Water District No.1MA1227000Palmer4,789<MRL<MRL0No PFAS detected
Paxton Water DepartmentMA2228000Paxton4,300<MRL<MRL0Other PFAS detected
Peabody Water Dept.MA3229000West Peabody54,4817<MRL0.002PFOA 1–3 × its limit
Pembroke Water Division DpwMA4231000Pembroke18,175<MRL<MRL0Other PFAS detected
Pepperell Dpw Water DivisionMA2232000Pepperell9,21711.4100PFOA 1–3 × its limit
Pittsfield Dpu Water DeptMA1236000Pittsfield43,927<MRL<MRL0No PFAS detected
Plainville Water DepartmentMA4238000Plainville8,8054.35.90.009PFOS 1–3 × its limit
Plymouth Water DepartmentMA4239000Plymouth47,100<MRL<MRL0.002Hazard Index below its limit
Provincetown Water DepartmentMA4242000Provincetown22,250<MRL<MRL0No PFAS detected
Quincy Water Dept. (Mwra)MA3243000Quincy106,000<MRL<MRL0No PFAS detected
Randolph Water DepartmentMA4244000Randolph35,1147.3130.3PFOS ≥ 3 × its limit
Raynham Center Water DistrictMA4245000Raynham10,96492<MRL0.32PFOA ≥ 3 × its limit
Reading Water Department (Mwra)MA3246000Reading26,262<MRL<MRL0No PFAS detected
Revere Water Division (Mwra)MA3248000Revere62,186<MRL<MRL0Other PFAS detected
Rockport Water DeptMA3252000Rockport10,000<MRL<MRL0No PFAS detected
Rowley Water DepartmentMA3254000Rowley6,1617.75.70PFOA 1–3 × its limit
Rutland Water DepartmentMA2257000Rutland6,025<MRL<MRL0No PFAS detected
Salem Water DepartmentMA3258000Salem44,480<MRL<MRL0Other PFAS detected
Salisbury Water DivisionMA3259000Salisbury9,3346<MRL0PFOA 1–3 × its limit
Sandwich Water DistrictMA4261000Sandwich23,000<MRL<MRL0No PFAS detected
Saugus Water Dept. (Mwra)MA3262000Saugus27,844<MRL<MRL0No PFAS detected
Scituate Water DivisionMA4264000Scituate19,2975.65.70.002PFOS 1–3 × its limit
Seekonk Water DistrictMA4265000Seekonk13,801<MRL50PFOS 1–3 × its limit
Sharon Water DeptMA4266000Sharon16,8468.1152.902PFOS ≥ 3 × its limit
Shirley Water DistrictMA2270000Shirley4,1656.9<MRL0.002PFOA 1–3 × its limit
Shrewsbury Water DepartmentMA2271000Shrewsbury38,3255.45.60.002PFOS 1–3 × its limit
Somerset Water DepartmentMA4273000Somerset18,303<MRL<MRL0No PFAS detected
Somerville Water Dept. (Mwra)MA3274000Somerville81,045<MRL<MRL0No PFAS detected
South Deerfield Water Supply DistrictMA1074001South Deerfield3,800<MRL<MRL0No PFAS detected
South Hadley Fd #1 (Mwra)MA1275000South Hadley14,800<MRL<MRL0No PFAS detected
South Hadley Fire District #2 Water DeptMA1275001South Hadley6,200<MRL<MRL0No PFAS detected
Southampton Water DeptMA1276000Southampton4,853<MRL<MRL0No PFAS detected
Southborough Dpw Water Division (Mwra)MA2277000Southborough10,638<MRL<MRL0No PFAS detected
Southbridge Tool And ManufacturingMA2080006Dudley58<MRL<MRL0No PFAS detected
Southbridge Water DepartmentMA2278000Southbridge19,562<MRL<MRL0Other PFAS detected
Southwick Water DeptMA1279000Southwick7,669<MRL<MRL0No PFAS detected
Spencer Water DepartmentMA2280000Spencer7,037<MRL<MRL0No PFAS detected
Springfield Water And Sewer CommissionMA1281000Springfield169,170<MRL<MRL0No PFAS detected
Sterling Water DepartmentMA2282000Sterling6,814<MRL5.20PFOS 1–3 × its limit
Stoneham Water Dept (Mwra Supply)MA3284000Stoneham23,244<MRL<MRL0No PFAS detected
Stoughton Water DepartmentMA4285000Stoughton29,2817.77.10.002PFOA 1–3 × its limit
Sturbridge Water DepartmentMA2287000Sturbridge4,746<MRL<MRL0No PFAS detected
Sudbury Water DistrictMA3288000Sudbury18,4169<MRL0.002PFOA 1–3 × its limit
Swampscott Water Dept. (Mwra)MA3291000Swampscott15,300<MRL<MRL0No PFAS detected
Swansea Water DistrictMA4292000Swansea17,3755.1<MRL0.771PFOA 1–3 × its limit
Taunton Water DivisionMA4293000Taunton62,165<MRL<MRL0No PFAS detected
Templeton Munic. Light And Water PlantMA2294000Baldwinville6,1595.2<MRL0PFOA 1–3 × its limit
Tewksbury Water DepartmentMA3295000Tewksbury31,3425<MRL0PFOA 1–3 × its limit
Tisbury Water WorksMA4296000Tisbury6,082<MRL<MRL0No PFAS detected
Topsfield Water DepartmentMA3298000Topsfield5,43595.40.002PFOA 1–3 × its limit
Town Of AvonMA4018000Avon4,7775.160PFOS 1–3 × its limit
Town Of EasthamMA4086095Eastham6,199<MRL<MRL0No PFAS detected
Townsend Water DepartmentMA2299000Townsend6,8326.5<MRL0PFOA 1–3 × its limit
Turners Falls Water DeptMA1192000Turners Falls8,080<MRL<MRL0No PFAS detected
Tyngsborough Water DistrictMA3301000Tyngsborough4,4164.6<MRL0PFOA 1–3 × its limit
Upper Cape Regional Water CooperativeMA4261024Sandwich56,250<MRL<MRL0No PFAS detected
Upton Dpw Water/Wastewater DivisionMA2303000Upton4,420<MRL<MRL0No PFAS detected
Uxbridge Dpw, Water DivisionMA2304000Uxbridge11,612<MRL6.70.342PFOS 1–3 × its limit
Wakefield Water DeptMA3305000Wakefield27,0906.9<MRL0PFOA 1–3 × its limit
Walpole Water DeptMA4307000Walpole24,070440PFOA 1–3 × its limit
Waltham Water DepartmentMA3308000Waltham65,218<MRL<MRL0No PFAS detected
Wannacomet Water CompanyMA4197000Nantucket27,703<MRL<MRL0No PFAS detected
Ware Water DeptMA1309000Ware10,0664.97.10PFOS 1–3 × its limit
Wareham Fire DistrictMA4310000Parkwood Beach20,102<MRL<MRL0No PFAS detected
Watertown Department Of Public WorksMA3314000Watertown35,985<MRL<MRL0No PFAS detected
Wayland Water DepartmentMA3315000Wayland14,096940PFOA 1–3 × its limit
Webster Water DepartmentMA2316000Webster17,7764.4<MRL0PFOA 1–3 × its limit
Weir River Water SystemMA4131000Hingham45,3396.4<MRL0.002PFOA 1–3 × its limit
Wellesley Water DivisionMA3317000Wellesley29,5506.36.60.003PFOS 1–3 × its limit
Wenham Water Dept.MA3320000Wenham3,9427.26.40.002PFOA 1–3 × its limit
West Boylston Water DistrictMA2321000West Boylston6,9195.4<MRL0PFOA 1–3 × its limit
West Bridgewater Water DeptMA4322000West Bridgewater7,7095.5<MRL0.002PFOA 1–3 × its limit
West Newbury Water DepartmentMA3324000West Newbury4,704<MRL<MRL0No PFAS detected
West Springfield Dpw Water DivisionMA1325000West Springfield28,835<MRL<MRL0No PFAS detected
Westborough Water DepartmentMA2328000Westborough21,5675.87.50.002PFOS 1–3 × its limit
Westfield Dpwwater DivisionMA1329000Westfield41,094<MRL<MRL0Other PFAS detected
Westford Water DepartmentMA3330000Westford18,8488.64.40.002PFOA 1–3 × its limit
Westminster Department Of Public WorksMA2332000Westminster3,889<MRL<MRL0No PFAS detected
Weston Water Dept.MA3333000Weston11,391<MRL<MRL0No PFAS detected
Weymouth Water DepartmentMA4336000Weymouth57,871<MRL<MRL0Other PFAS detected
Whately Water DepartmentMA1337010South Deerfield900<MRL<MRL0No PFAS detected
Whitinsville Water CompanyMA2216000Whitinsville7,899<MRL<MRL0No PFAS detected
Whitman Water SystemMA4338000Whitman14,947<MRL<MRL0.002Hazard Index below its limit
Wilbraham Water Dept (Mwra)MA1339000Wilbraham8,533<MRL<MRL0No PFAS detected
Williamstown Water DeptMA1341000Williamstown7,326<MRL<MRL0No PFAS detected
Wilmington Water DeptMA3342000Wilmington21,654<MRL<MRL0Other PFAS detected
Winchendon Water DepartmentMA2343000Winchendon5,706<MRL<MRL0No PFAS detected
Winchester Water DeptMA3344000Winchester22,970<MRL<MRL0No PFAS detected
Winthrop Water Division, (Mwra)MA3346000Winthrop19,316<MRL<MRL0No PFAS detected
Woburn Water Dept.MA3347000Woburn40,8768.46.90.002PFOA 1–3 × its limit
Worcester Dpwp, Water Supply DivisionMA2348000Worcester206,518<MRL<MRL0Other PFAS detected
Wrentham Water DivisionMA4350000Wrentham12,1905.74.40.003PFOA 1–3 × its limit
Yarmouth Water DepartmentMA4351000West Yarmouth38,900<MRL<MRL0.31Hazard Index below its limit

Not tested under UCMR 5 (509)

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
10 Thru 16 Hastings StreetMA2179009NTNCWSMendon174Worcester County
122 Main StreetMA1053033CWSGardner30Franklin County
1300 Mass AveMA2037020NTNCWSBoxborough31Middlesex County
1414 Mass Ave BoxboroughMA2037017NTNCWSMaynard50Middlesex County
155 Swanson Rd SynqorMA2037024NTNCWSQuincy100Middlesex County
159 Swanson Rd Setra Systems IncMA2037018NTNCWSQuincy278Middlesex County
2 Allen St Professional BldgMA1120022NTNCWSWilbraham30Hampden County
28 Hastings St CorpMA2179002NTNCWSMendon63Worcester County
330 Codman Hill RoadMA2037023NTNCWSBoxborough150Middlesex County
60 And 70 Codman Hill RdMA2037021NTNCWSConcord150Middlesex County
85 Swanson Rd LlcMA2037022NTNCWSHouston40Middlesex County
Acushnet Manufactured HomesMA4003004CWSAcushnet85Bristol County
Adams Farm Slaughterhouse LlcMA1015001NTNCWSAthol45Worcester County
Agawam Springs Water CompanyMA4239060CWSWareham2,380Plymouth County
Alphabet Soup Child Care CenterMA1111037NTNCWSGranby30Hampshire County
American Institute For Economic ResearchMA1113028NTNCWSGreat Barrington25Berkshire County
Anchor Academy BerkleyMA4027007NTNCWSBerkley41Bristol County
Andrews Farm Water Co.,Inc.MA3038020CWSNewberry150Essex County
ApplegreenMA2287005NTNCWSAndover185Worcester County
Applewood Community CorporationMA2037013CWSBoxborough500Middlesex County
Applewood Home For EldersMA1015006CWSAthol50Worcester County
Aquarion Water Co. (Springdale Farms)MA3078008CWSMillbury126Norfolk County
Aquarion Water CompanyMA1267000CWSBridgeport987Berkshire County, Plymouth County
Aquarion Water Company (Dover)MA3078006CWSMillbury1,929Norfolk County
Aquarion Water Company Ponds Of PlymouthMA4239045CWSMillbury2,267Plymouth County
Aquinnah Wampanoag010307001CWSChilmark89
Arbor Glen CondominiumsMA2286026CWSExeter132Middlesex County
Ashby Elementary SchoolMA2012002NTNCWSPepperell237Middlesex County
Ashfield Water DistrictMA1013000CWSAshfield400Franklin County
Ashmere Water ServiceMA1132008CWSHinsdale66Berkshire County
Assurance Technology Corp.MA3051011NTNCWSCarlisle75Middlesex County
Ayer Road Properties LlcMA2125021CWSHarvard150Worcester County
Bachelor KnollsMA1111000CWSGranby101Hampshire County
Bangmas Farm Store And Dairy BarMA2304014NTNCWSWhitinsville34Worcester County
Bard College At Simons RockMA1113017CWSGreat Barrington500Berkshire County
Barnstable County JailMA4036015CWSBourne600Barnstable County
Barre Mhp/Waterwheel VillageMA2021001CWSBarre114Worcester County
Bartows Mobile Home ParkMA1225038CWSOtis25Berkshire County
Beaver Pond MeadowsMA1121011CWSNorth Adams160Berkshire County
Becket Washington SchoolMA1022011NTNCWSBecket175Berkshire County
Bedford Va Hospital (Rogers Mem. Hosp.)MA3023001CWSBedford177Middlesex County
Beechwood Point CondosMA4172035CWSMashpee112Barnstable County
Benchmark CondominiumsMA3301008CWSTyngsborough60Middlesex County
Benfield FarmsMA3051021CWSEast Boston50Middlesex County
Berkley Community SchoolMA4027003NTNCWSBerkley647Bristol County
Berkley Middle School/Town OfficesMA4027001NTNCWSBerkley500Bristol County
Berkshire Country Day SchoolMA1283013NTNCWSLenox250Berkshire County
Berkshire EstatesMA1058002CWSSummerland180Berkshire County
Berkshire Mall LlcMA1148011NTNCWSLanesborough500Berkshire County
Berkshire Rehab Skilled Care CtrMA1260001CWSSandisfield100Berkshire County
Berkshire SchoolMA1267001CWSSheffield425Berkshire County
Berkshire Waldorf SchoolMA1113013NTNCWSGreat Barrington300Berkshire County
Berlin Memorial SchoolMA2028009NTNCWSBerlin275Worcester County
Bernardston Fire Water DistMA1029000CWSBernardston1,471Franklin County
Bishops Landing CondominiumsMA4285007CWSDuxbury50Norfolk County
Bisselville EstateMA1132009CWSHinsdale74Berkshire County
Bittersweet Farm IncMA4334065NTNCWSWestport180Bristol County
Bjs Wholesale Distribution CenterMA2304013NTNCWSUxbridge225Worcester County
Blackstone Valley CannabisMA2304018NTNCWSUxbridge50Worcester County
Blandford Water DeptMA1033000CWSBlandford442Hampden County
Bolton CornersMA2034006NTNCWSBolton100Worcester County
Bolton Country ManorMA2034027CWSWorcester60Worcester County
Bolton Office Park Alta Nashoba ValleyMA2034019CWSBolton788Worcester County
Bondsville Fire And Water DistrictMA1227002CWSBondsville1,429Hampden County, Hampshire County
Boxborough Executive Office CenterMA2037019NTNCWSBoxborough60Middlesex County
Boxborough Municipal BuildingsMA2037010NTNCWSBoxborough600Middlesex County
Boxborough RegencyMA2037008NTNCWSBoxborough500Middlesex County
Boxford Police StationMA3038026NTNCWSBoxford25Essex County
Breton EstatesMA1227015CWSPalmer48Hampden County
Briarwood TownhomesMA2140013CWSNashua40Worcester County
Briggsville Water DistrictMA1063003CWSClarksburg180Berkshire County
Bright Horizons DaycareMA2037035NTNCWSWatertown90Middlesex County
Brimfield Elementary SchoolMA1043014NTNCWSBrimfield327Hampden County
Brimfield Housing AuthorityMA1043002CWSBrimfield60Hampden County
Brook Village CondominiumMA2037007CWSHopkinton400Middlesex County
Brookfield Meadows MhpMA2045005CWSBrookfield120Worcester County
Brookfield Water DepartmentMA2045000CWSBrookfield1,008Worcester County
Brookside Mobile Home ParkMA4003002CWSNew Bedford67Bristol County
Brookside VillageMA1306001CWSNorwich80Hampden County
Broomfield LaboratoriesMA2034022NTNCWSLeominster25Worcester County
Buffumville Heights Estates CondominiumMA2226008CWSOxford40Worcester County
Business Park West Condominium TrustMA3301030NTNCWSTyngsborough30Middlesex County
Byfield Water DistrictMA3205001CWSByfield2,228Essex County
Cady Brook Crossing CondominiumsMA2054050CWSShrewbury75Worcester County
Campanelli DevelopmentMA2037034NTNCWSBraintree1,200Middlesex County
Cape Cod Space Force StationMA4036008NTNCWSSagamore130Barnstable County
Carlisle Extended Day Program,Inc.MA3051016NTNCWSCarlisle70Middlesex County
Carlisle Public SchoolMA3051004NTNCWSCarlisle725Middlesex County
Carlisle Village CourtMA3051025CWS25Middlesex County
Carriage House CondominiumMA2037009CWSActon68Middlesex County
Carver Elementary SchoolMA4052007NTNCWSCarver800Plymouth County
Carver High School And Middle SchoolMA4052064NTNCWSCarver1,200Plymouth County
Carver Municipal BuildingsMA4052061CWSCarver100Plymouth County
Ccns Marconi AreaMA4318047NTNCWSWellfleet499Barnstable County
Cedar Brook SchoolMA4247028NTNCWSRehoboth80Bristol County
Cedarwood ApartmentsMA1024009CWSGranby25Hampshire County
Centre Village ApartmentsMA2037006CWSHarvard36Middlesex County
Century Mill EstatesMA2034031CWSBolton135Worcester County
Charlton Manor Rest HomeMA2054005CWSWestborough26Worcester County
Chase CorporationMA2226016NTNCWSWestwood91Worcester County
Cheshire Water DeptMA1058000CWSCheshire1,407Berkshire County
Chester / Middlefield Elem SchoolMA1059012NTNCWSHuntington123Hampden County
Chester Water DeptMA1059000CWSChester750Hampden County
Children First Enterprises IncMA1111038NTNCWSGranby121Hampshire County
Chilmark PreschoolMA4062009NTNCWSChilmark40Dukes County
Chilmark SchoolMA4062008NTNCWSChilmark90Dukes County
Clark Shores Water CorporationMA4146006CWSLakeville350Plymouth County
Clarks Corvair PartsMA1268003NTNCWSShelburne27Franklin County
Clarksburg Elementary SchoolMA1063008NTNCWSNorth Adams250Berkshire County
Cliffside ApartmentsMA1289001CWSSpring Valley500Franklin County
Coaksett CommonsMA4334091NTNCWSS. Dartmouth68Bristol County
Cobblers Creek CondominiumsMA2303005CWSSutton118Worcester County
Codman Hill CondominiumMA2037001CWSSudbury360Middlesex County
Cold Spring Country ClubMA1024013NTNCWSBelchertown75Hampshire County
Colony Heights CondominiumMA3301020CWSTyngsborough120Middlesex County
Colrain Central Elem SchoolMA1066004NTNCWSColrain115Franklin County
Colrain Fire District #1MA1066000CWSColrain100Franklin County
Conway Grammar SchoolMA1068006NTNCWSSouth Deerfield261Franklin County
Cool Sandy Beach Community Water SystemMA2257003CWSRutland70Worcester County
Corrigan Mental Health CenterMA4095010NTNCWSFall River152Bristol County
Cosgrove RealtyMA2037025NTNCWSHarvard25Middlesex County
Country Montessori PreschoolMA2290029NTNCWSSutton83Worcester County
Countryside CondominiumMA2110004CWSNorthboro30Worcester County
Cpi Radant Technologies, IncMA2286020NTNCWSGleasondale110Middlesex County
Craftsman Village CondominiumsMA2125026CWSWaltham40Worcester County
Cranberry KnollMA4240008CWSHalifax40Plymouth County
Cranberry Village Residents AssociationMA4052026CWSCarver414Plymouth County
Crescent Valley CondosMA1111025CWSWest Springfield78Hampshire County
Cummington Water DeptMA1069001CWSCummington320Hampshire County
Curtis Hill CondominiumMA3301035CWSWestford96Middlesex County
Cutchins Program For Children FamiliesMA1024023NTNCWSBelchertown25Hampshire County
Dambrosio Eye Care, Inc.MA2147007NTNCWSGardner125Worcester County
Dcr Quabbin Administration BuildingMA1024011NTNCWSBelchertown80Hampshire County
Deer Island (Mwra)MA3035001NTNCWSChelsea350Suffolk County
Deerfield EstatesMA2139006CWSSouthborough100Middlesex County
Deerfield Fire DistrictMA1074000CWSDeerfield1,300Franklin County
Dennett Elementary SchoolMA4240004NTNCWSPlympton282Plymouth County
Dorothy L Beckwith Middle SchoolMA4247002NTNCWSNorth Dighton1,600Bristol County
Dover Water DeptMA3078000NTNCWSDover500Norfolk County
Dragon Hill CondominiumsMA1268011CWSShelburne30Franklin County
Drummer Boy CondominiumsMA4318010NTNCWSHingham25Barnstable County
Dunstable Water DepartmentMA2081000CWSDunstable337Middlesex County
Eagle Hill SchoolMA1124003CWSHardwick300Worcester County
Eaglebrook SchoolMA1074005CWSDeerfield350Franklin County
East Brookfield Water DepartmentMA2084000CWSEast Brookfield1,526Worcester County
East Chelmsford Water DistrictMA3056001CWSChelmsford2,800Middlesex County
East Northfield Water CoMA1217001CWSNorthfield659Franklin County
Egremont Water DeptMA1090000CWSSouth Egremont1,000Berkshire County
Elizabeth Brook ApartmentsMA2286017CWSStow54Middlesex County
Elm Hill Water DistrictMA2017001CWSAuburn2,278Worcester County
Emerson HospitalMA3067020NTNCWSConcord1,200Middlesex County
Enclave At BoxboroughMA2037038CWSBoylston100Middlesex County
Erving Paper MillsMA1091005NTNCWSErving135Franklin County
Erving Water DeptMA1091000CWSErving561Franklin County
Essex Water Dept.MA3092000CWSEssex3,675Essex County
Estates At Highland RidgeMA2139010CWSWestborough100Middlesex County
Farmington River Reg Elem SchoolMA1225040NTNCWSOtis225Berkshire County
Fields At Sherborn Condo TrustMA3269032CWSBoston110Middlesex County
First Church CongregationalMA3038011NTNCWSBoxford50Essex County
First Congregational ChurchMA4240007NTNCWSPlympton55Plymouth County
Five Oaks Investments LlcMA4052049NTNCWSNorth Carver100Plymouth County
Florence Sawyer SchoolMA2034024NTNCWSBolton873Worcester County
Four Mile VillageMA3038001CWSBoxford133Essex County
Foxglove ApartmentsMA2125013CWSNew Ipswich40Worcester County
Freetown Elementary SchoolMA4102008NTNCWSFreetown501Bristol County
Freetown Water CommissionMA4102035CWSAssonet1,600Bristol County
Freetown/Lakeville Regional School Dist.MA4146016NTNCWSLakeville1,991Plymouth County
Gabriel Abbott Memorial SchoolMA1098004NTNCWSNorth Adams150Berkshire County
Gale Brook SchoolMA1223010NTNCWSGreenfield50Franklin County
Garrison Place Condominium TrustMA3051022CWSChelmsford32Middlesex County
Gateway Regional SchoolMA1143003NTNCWSHuntington730Hampshire County
Gilbertville Water DistrictMA1124001CWSGilbertville1,089Worcester County
Gill Elementary SchoolMA1106004NTNCWSTurners Falls155Franklin County
Glen Ridge Residents TrustMA3078002CWSDover131Norfolk County
Gosnold Water DeptMA4109000CWSGosnold425Dukes County
Gould FarmMA1193003CWSMonterey93Berkshire County
Granby Heights CondominiumsMA1111003CWSWest Springfield152Hampshire County
Granby Housing AuthorityMA1111002CWSGranby61Hampshire County
Granby Jr Sr High And East Meadow SchoolMA1111006NTNCWSGranby870Hampshire County
Granville Centre Water CoMA1112000CWSGranville70Hampden County
Granville Village SchoolMA1112006NTNCWSGranville100Hampden County
Greathorse Country ClubMA1120008NTNCWSEnfield201Hampden County
Green Acres Daycare Center, Inc.MA2287012NTNCWSSturbridge55Worcester County
Green Meadows SchoolMA1120011NTNCWSWilbraham321Hampden County
Greylock Estates Homeowners AssociationMA1148008CWSLanesborough25Berkshire County
Griswoldville Water DistrictMA1066001CWSColrain125Franklin County
Growing Footprints Education CenterMA2054072NTNCWSCharlton55Worcester County
Hale Middle SchoolMA2286005NTNCWSBolton321Middlesex County
Hampden Housing AuthorityMA1120002CWSHampden59Hampden County
Hampden Town HallMA1120006NTNCWSHampden270Hampden County
Hampshire Franklin Childrens Day CareMA1154004NTNCWSNorth Amherst29Franklin County
Hampshire Regional High SchoolMA1331003NTNCWSWesthampton847Hampshire County
Hancock Elementary SchoolMA1121009NTNCWSHancock50Berkshire County
Hanscom Family Housing (Landings)MA3157001CWSEl Paso3,067Middlesex County
Harborside VillageMA4318040CWSWellfleet165Barnstable County
Hardwick Center Water DistrictMA1124000CWSGilbertville80Worcester County
Hardwick Elementary SchoolMA1124008NTNCWSBarre194Worcester County
Harry Lee Cole SchoolMA3038009NTNCWSBoxford439Essex County
Harvard ForestMA1234001NTNCWSPetersham80Worcester County
Harvard Green CondominiumsMA2125014CWSHarvard150Worcester County
Harvard Ridge CondominiumMA2037002CWSBedford350Middlesex County
Harvard Water DepartmentMA2125000CWSHarvard1,422Worcester County
Hawlemont Regional SchoolMA1053007NTNCWSCharlemont210Franklin County
Henry P. Clough SchoolMA2179005NTNCWSMendon460Worcester County
Heritage AssociationMA1311002CWSWarren158Worcester County
Heron Pond At StockbridgeMA1283017CWSStockbridge50Berkshire County
Herring Cove Condominiums TrustMA4239049CWSPlymouth25Plymouth County
High Lawn FarmMA1150003CWSLee43Berkshire County
Highland Ridge CondominiumsMA2028022CWSBerlin132Worcester County
Hillcrest Water DistrictMA2151002CWSLeicester1,500Worcester County
Hillside Heights Of GranbyMA1111039CWSGranby30Hampshire County
Hilltown Community Development CorpMA1060006NTNCWSChesterfield45Hampshire County
Hinsdale Water DeptMA1132000CWSHinsdale1,000Berkshire County
Holland Elementary SchoolMA1135003NTNCWSHolland232Hampden County
Holmes Park Water DistrictMA2332001CWSWestminster131Worcester County
Hopkinton Country ClubMA2139003NTNCWSHopkinton200Middlesex County
Horton Estates Condominium Trust, Inc.MA4247055CWSHouston64Bristol County
Housatonic Water WorksMA1113003CWSGreat Barrington1,391Berkshire County
Hubbardston Center SchoolMA2140004NTNCWSBarre316Worcester County
Hubbardston House ApartmentsMA2140010CWSWorcester40Worcester County
Huntington Water DeptMA1143000CWSHuntington2,180Hampshire County
Hutchinson Water LlcMA1058001CWSGrafton400Berkshire County
Immaculate Heart Of Mary SchoolMA2125011NTNCWSStill River110Worcester County
Imperial AutoMA2179016NTNCWSMendon120Worcester County
Imperial PlazaMA2179022NTNCWSMendon200Worcester County
Island Childrens SchoolMA4296015NTNCWSWest Tisbury36Dukes County
Jacobs Pillow Dance FestivalMA1022026NTNCWSBecket750Berkshire County
Jakes Path PwsMA4182018CWSMiddleborough168Plymouth County
Jiminy Peak ResortMA1121004CWSHancock1,000Berkshire County
John Road Industrial ParkMA2290024NTNCWSWakefield25Worcester County
Js Bryant SchoolMA1069012NTNCWSCummington65Hampshire County
Juniper Hill Water CompanyMA2286000CWSStow220Middlesex County
Karl Storz Endovision, Inc.MA2054051NTNCWSCharlton550Worcester County
Kids A Lot (Daycare)MA2286023NTNCWSStow145Middlesex County
Kings Grant Water Co IncMA4211001CWSAttleboro434Bristol County
Klondike CampgroundMA1225017NTNCWSGreat Barrington65Berkshire County
Koch Rt2 Toyota / MysaMA2147009NTNCWSLancaster50Worcester County
Kuehns Way LlcMA4296018CWSWest Tisbury80Dukes County
Lake Point VillageMA4146004CWSCarver66Plymouth County
Lancaster County Road LlcMA2125012NTNCWSNewton50Worcester County
Lancaster Woods CondominiumsMA2147008CWSWestborough120Worcester County
Lanesborough Fire And Water DistrictMA1148000CWSLanesborough2,342Berkshire County
Laurel Hill CondominiumsMA2110006CWSGrafton64Worcester County
Lees SupermarketMA4334008NTNCWSWestport90Bristol County
Leicester Water Supply DistrictMA2151000CWSLeicester3,200Worcester County
Leino Park Water DistrictMA2332005CWSWestminster120Worcester County
Leland FarmsMA3269028CWSSherborn25Middlesex County
Leverett Elementary SchoolMA1154001NTNCWSLeverett217Franklin County
Lfb Usa 92 (Rabbit)MA2054075NTNCWSFramingham25Worcester County
Lfb Usa, Inc.MA2054029NTNCWSSpencer16Worcester County
Liberty House CondominiumMA2037014CWSActon80Middlesex County
Liberty Manor IncMA1329009CWSWestfield500Hampden County
Lilac Hedge FarmMA2257010NTNCWSBerlin40Worcester County
Linda Manor Nursing HomeMA1214001CWSLeeds120Hampshire County
Linden PondsMA4131005CWSHingham384Plymouth County
Litecontrol CorporationMA4240001NTNCWSPlympton160Plymouth County
Little Peoples CollegeMA4003009NTNCWSAcushnet50Bristol County
Lkq Rt. 16 Used Auto Parts, Inc.MA2316002NTNCWSWebster76Worcester County
Long Pond Realty TrustMA4239051CWSPlymouth90Plymouth County
M.V. Public Charter SchoolMA4296011NTNCWSWest Tisbury150Dukes County
Madden EstatesMA2323002CWSWest Brookfield50Worcester County
Maillet Woods CondominiumsMA2139011CWSHopkinton55Middlesex County
Manchaug Water District Of SuttonMA2290001CWSManchaug476Worcester County
Maplebrook ApartmentsMA2226009CWSOxford33Worcester County
Marketplace Square Llc.MA4052056NTNCWSBrockton100Plymouth County
Marthas Vineyard AirportMA4296004NTNCWSVineyard Haven750Dukes County
Masac PlymouthMA4239010CWSMilford210Plymouth County
Massachusetts State Police AcademyMA2202001NTNCWSNew Braintree200Worcester County
Massasoit Hills Trailer ParkMA4318056CWSSouth Wellfleet120Barnstable County
Masters Academy InternationalMA2286016CWSStow225Middlesex County
Maynard State LlcMA4334078CWSSwansea35Bristol County
Mci BridgewaterMA4042001CWSMilford2,802Plymouth County
Meadow Woods Estate Homeowners Assn, IncMA4052054CWSCarver120Plymouth County
Meadowbrook Acres Mobile Home ParkMA1043001CWSNashua137Hampden County
Meadowbrook Village CondominiumsMA2028012CWSBoylston150Worcester County
Meadowbrook Water TrustMA3078005CWSDover57Norfolk County
Memorial Dr. Ind. Park Site 1 (Rigr)MA2271003NTNCWSShrewsbury52Worcester County
Memorial Dr. Ind. Park Site 2 (Rifl)MA2271004NTNCWSShrewsbury78Worcester County
Mendon Housing AuthorityMA2179001CWSMendon31Worcester County
Mendon Town Hall CampusMA2179027NTNCWSMendon25Worcester County
Mendon Water DepartmentMA2179000CWSMendon470Worcester County
Menemsha Water CompanyMA4062000CWSChilmark841Dukes County
Merrohawke Nature SchoolMA3038027NTNCWSBoxford50Essex County
Metrowest YmcaMA2139001NTNCWSFramingham700Middlesex County
Micro MechMA3144008NTNCWSIpswich60Essex County
Mill River Water Takers AssociationMA1203000CWSMill River150Berkshire County
Millbury Ind. Park/ Park Hill VillageMA2186001CWSMillbury400Worcester County
Millville Elementary SchoolMA2188004NTNCWSMillville400Worcester County
Miscoe Hill Middle SchoolMA2179004NTNCWSMendon760Worcester County
Mit Haystack ObservatoryMA3301023NTNCWSCambridge40Middlesex County
Mit Millstone LaboratoryMA3301034NTNCWSCambridge25Middlesex County
Mohawk Trail Regional High SchoolMA1047000NTNCWSBuckland550Franklin County
Monroe Water DistrictMA1190000CWSMonroe55Franklin County
Montague Center Water DistrictMA1192003CWSMontague450Franklin County
Monterey Water CompanyMA1193000CWSMonterey138Berkshire County
Monument Mtn Regional HsMA1113016NTNCWSStockbridge1,700Berkshire County
Mount St Marys AbbeyMA4350003CWSWrentham60Norfolk County
Mullein Hill Christian AcademyMA4146029NTNCWSLakeville125Plymouth County
MwraMA6000000CWSChelsea2,580,000Suffolk County
Nanatomqua Mobile Home ParkMA2045001CWSBrookfield123Worcester County
Nashoba ParkMA2034025NTNCWSBolton30Worcester County
Nashoba Regional High SchoolMA2034010NTNCWSBolton1,057Worcester County
National Technical SystemsMA2037033NTNCWSBoxborough25Middlesex County
Nemasket Health Care CenterMA4182015CWSEddyville90Plymouth County
New Braintree Grade SchoolMA2202004NTNCWSNew Braintree85Worcester County
New England Equities LlcMA1120035NTNCWSTappan25Hampden County
New England Laborers Training AcademyMA2139002NTNCWSHopkinton200Middlesex County
New Hingham Regional Elementary SchoolMA1060004NTNCWSChesterfield189Hampshire County
New Marlborough Central SchoolMA1203011NTNCWSSheffield111Berkshire County
Noquochoke Village LlcMA4334092CWSBoston180Bristol County
North Carver Water SystemMA4052072CWSCarver300Plymouth County
North Dighton Fire DistrictMA4076002CWSNorth Dighton1,300Bristol County
North End Mazda And SubaruMA2162011NTNCWSActon63Worcester County
Northbrook Village I / Berlin Ret.MA2028007CWSBerlin48Worcester County
Northbrook Village IiMA2028018CWSWellesley80Worcester County
Northfield Mt Hermon SchoolMA1106002CWSMount Hermon750Franklin County
Northfield Mtn Station Visitor CenterMA1217003NTNCWSNorthfield140Franklin County
Northfield Water DistrictMA1217000CWSNorthfield800Franklin County
Oakham Country Day SchoolMA2222004NTNCWSOakham35Worcester County
Oakham Elementary SchoolMA2222001NTNCWSOakham149Worcester County
Old Colony Reg.Voc.Tech. High Sch.MA4250003NTNCWSRochester400Plymouth County
Old Farm Road Water TrustMA3078001CWSDover40Norfolk County
Oldcastle ApgMA4247052NTNCWSRehoboth25Bristol County
One School GlobalMA2186005NTNCWSMillbury50Worcester County
Oronoque Condominium TrustMA1283019CWSPittsfield25Berkshire County
Out Water LlcMA2147011NTNCWSLancaster25Worcester County
Paddock EstatesMA2037036CWSBoxborough463Middlesex County
Pan Am Southern RailroadMA1074007CWSEast Deerfield120Franklin County
Paragon CommunicationsMA2034001NTNCWSBolton210Worcester County
Pequot HighlandsMA3258001CWSPortland900Essex County
Petersham Center SchoolMA1234006NTNCWSPetersham155Worcester County
Phillipston Memorial BuildingMA2235002NTNCWSPhillipston50Worcester County
PiconicsMA3301019NTNCWSTyngsborough40Middlesex County
Pilot Grove ApartmentsMA2286018CWSStow175Middlesex County
Pilot Grove Apartments IiMA2286031CWSStow134Middlesex County
Pilot Travel CenterMA2287024NTNCWSKnoxville3,000Worcester County
Pine Hill CondominiumMA2002010CWSWorcester95Middlesex County
Pine Hill Elementary SchoolMA3269011NTNCWSDover480Middlesex County
Pine Hill Village CondominiumsMA2125025CWSTyngsborough100Worcester County
Pine Ridge Condominiums At Sampsons PondMA4052074CWSRaynham89Plymouth County
Pine Valley PlantationMA1024002CWSBelchertown600Hampshire County
Pinecroft SchoolMA4247004NTNCWSRehoboth50Bristol County
Pinetree VillageMA4052025CWSCarver348Plymouth County
Pinewood On The Green CondosMA2226011CWSBoylston50Worcester County
Pioneer Valley Regional SchoolMA1217002NTNCWSNorthfield500Franklin County
Plaza @ Pondview Place LlcMA3301043NTNCWSTyngsborough30Middlesex County
Pleasant WaterMA4318091CWSSouth Yarmouth200Barnstable County
Plymouth So.Elem.Sch.MA4239017NTNCWSNorth Plymouth950Plymouth County
Plymouth South High SchoolMA4239046NTNCWSNorth Plymouth2,875Plymouth County
Pond Ridge Condo AssnMA1289002CWSSunderland88Franklin County
Post Office PlaceMA2241015NTNCWSPrinceton85Worcester County
Precious BeginningsMA3078010NTNCWSDover44Norfolk County
Prima Care (Klrc Realy Trust)MA4334083NTNCWSFall River25Bristol County
Prindle Pond Conference CenterMA2054053NTNCWSCharlton305Worcester County
Quabbin Adult MedicineMA1024012NTNCWSSpringfield25Hampshire County
Quabbin Sunrise Cooperative IncMA1309001CWSWare65Hampshire County
Randolph/Holbrook Joint Water BoardMA4244001CWSHolbrook46,519Norfolk County
Ranor IncorporatedMA2332003NTNCWSWestminster115Worcester County
Rediker SoftwareMA1120033NTNCWSHampden65Hampden County
Regency At Bolton CondominiumsMA2034030CWSWestborough148Worcester County
Regency At Stow CondominiumsMA2286033CWSBedford132Middlesex County
Richmond Consolidated SchoolMA1249004NTNCWSRichmond250Berkshire County
River Crossing CondominiumMA3301002CWSLowell150Middlesex County
RiverbridgeMA2028020CWSBrewster1,330Worcester County
Riverside Water DistrictMA1106000CWSGill341Franklin County
Rochester Memorial SchoolMA4250002NTNCWSRochester688Plymouth County
Rockwood MeadowsMA2303004CWSWorcester110Worcester County
Rowe Elementary SchoolMA1253007NTNCWSRowe88Franklin County
Royalston Community SchoolMA1255004NTNCWSAthol200Worcester County
Rupp Realty TrustMA3205021NTNCWSNewbury40Essex County
Russell Water DeptMA1256000CWSRussell1,228Hampden County
Sacred Heart Early Childhood CenterMA4145007NTNCWSKingston120Plymouth County
Sacred Heart Elementary SchoolMA4145003NTNCWSKingston250Plymouth County
Saint Josephs AbbeyMA2280002CWSSpencer45Worcester County
Salem And Beverly Water Supply BoardMA3030001CWSBeverly90,330Essex County
Sanderson AcademyMA1013001NTNCWSAshfield170Franklin County
Savoy Elementary SchoolMA1263003NTNCWSNorth Adams90Berkshire County
Sawyer Hill EcovillageMA2028017CWSBerlin272Worcester County
Scantic Valley Water DistrictMA1120023CWSHampden100Hampden County
Schooner Pass Trustees CondominiumsMA4036011CWSRaynham136Barnstable County
Scotts Grove LlcMA4296017CWSWest Tisbury36Dukes County
Sea Oaks CondominiumsMA4172033CWSBarnstable222Barnstable County
Semass Resource Recovery FacilityMA4250007NTNCWSWest Wareham45Plymouth County
Shaker Place OfficesMA2125020NTNCWSManchester50Worcester County
Shelburne Falls Fire DistrictMA1268000CWSShelburne Falls1,806Franklin County
Sherborn Town Offices; Police; LibraryMA3269019NTNCWSSherborn25Middlesex County
Shutesbury Elementary SchoolMA1272002NTNCWSShutesbury285Franklin County
Siasconset Water DepartmentMA4197001CWSNantucket3,000Nantucket County
Silver MeadowMA1306006CWSSpringfield25Hampden County
Silver Spruce Montessori SchoolMA2110002NTNCWSGrafton85Worcester County
Silverleaf Hollow CondominiumsMA2140011CWSHubbardston40Worcester County
South Ashmere Water Association IncMA1132002CWSHockessin150Berkshire County
South Grafton Water DistrictMA2110001CWSSouth Grafton3,262Worcester County
South Meadow VillageMA4052001CWSCarver750Plymouth County
South Royalston Improvement CorpMA1255000CWSRoyalston275Worcester County
Southern Worc. County Ed. CollaborativeMA2080004NTNCWSCharlton60Worcester County
Southfield Redevelopement AuthorityMA4336007CWSWeymouth2,300Norfolk County
Southfield Water CompanyMA1203002CWSSouthfield80Berkshire County
Southwicks ZooMA2179011NTNCWSMendon1,000Worcester County
Spofford Pond SchoolMA3038008NTNCWSBoxford486Essex County
Sports Haven Mobile Home ParkMA1024001CWSBelchertown107Hampshire County
Spring Hill WellnessMA2012008NTNCWSAshby48Middlesex County
Staffordshire Country EstatesMA2151009CWSCherry Valley140Worcester County
Sterling Nursery SchoolMA2282006NTNCWSSterling150Worcester County
Stiles And Hart Brick CompanyMA4042003NTNCWSBridgewater45Plymouth County
Still Meadow Village CondominiumsMA2115009CWSGroton50Middlesex County
Stockbridge Water DeptMA1283003CWSStockbridge2,800Berkshire County
Stones Throw CondosMA4300040CWSNorth Truro80Barnstable County
Stow Center SchoolMA2286007NTNCWSBolton644Middlesex County
Stow Fire And Community CenterMA2286006NTNCWSStow50Middlesex County
Stow Industrial (Flb Incorporated)MA2286019NTNCWSWestford25Middlesex County
Stow Municipal BuildingsMA2286022NTNCWSStow30Middlesex County
Stow Shopping CenterMA2286003NTNCWSMarlborough100Middlesex County
Sturbridge Crossing CondominiumMA2287025CWSSturbridge52Worcester County
Sturbridge Retirement Coop. Corp.MA2287020CWSSturbridge350Worcester County
Summer VillageMA3330025NTNCWSNewton1,000Middlesex County
Sunderland Water DistrictMA1289000CWSSunderland3,190Franklin County
Sunset Ridge CondominiumsMA2034028CWSWestborough42Worcester County
Sutton Public SchoolsMA2290009NTNCWSSutton1,700Worcester County
Sweet Farm Homeowners AssociationMA1341030CWSWilliamstown25Berkshire County
Sweet Wood Retirement CommunityMA1341003CWSWilliamstown200Berkshire County
Swift RiverMA1069003NTNCWSBrentwood250Hampshire County
Swift River Elementary SchoolMA1204001NTNCWSNew Salem180Franklin County
Sysco Boston, LlcMA4240005NTNCWSPlympton350Plymouth County
Tewksbury HospitalMA3295001CWSTewksbury2,500Middlesex County
The Academy At CharlemontMA1053024NTNCWSCharlemont100Franklin County
The AppleworksMA2125007NTNCWSBoston36Worcester County
The Childrens Garden Nursery SchoolMA2012007NTNCWSAshby54Middlesex County
The Home For Little WanderersMA4239030NTNCWSPlymouth50Plymouth County
The InternationalMA2034004NTNCWSBolton100Worcester County
The Macduffie SchoolMA1111001CWSGranby305Hampshire County
The Meeting House @ Stow CondoMA2286012CWSStow92Middlesex County
The New Testament ChurchMA4239003NTNCWSPlymouth150Plymouth County
The Preserve At Hopkinton CondoMA2139008CWSBoylston80Middlesex County
The Quabbin RetreatMA1234003NTNCWSNeedham40Worcester County
The Ranch Golf ClubMA1279003NTNCWSSouthwick200Hampden County
The Reserve At Spring HillMA4247061CWSRehoboth300Bristol County
The Taylor SchoolMA2037037NTNCWSBoxborough50Middlesex County
The Village At Shepley HillMA2115012CWSSudbury52Middlesex County
Thomas Prince SchoolMA2241003NTNCWSPrinceton401Worcester County
Thorndike Fire And Water DistrictMA1227001CWSThorndike1,435Hampden County
Three Rivers Fire DistrictMA1227003CWSThree Rivers3,258Hampden County
Toria Heights CondominiumMA2226007CWSOxford60Worcester County
Touchstone Community SchoolMA2110003NTNCWSGrafton100Worcester County
Town Of Hubbardston OfficesMA2140015NTNCWSHubbardston25Worcester County
Town Of WestportMA4334090CWSWestport328Bristol County
Townhouses @ Copper LanternMA4052070CWSCarver176Plymouth County
Trail Ridge CondominiumsMA2125016CWSWorcester104Worcester County
Tri Town Water BoardMA4040002CWSBraintree856,000Norfolk County
Twin Oaks Farm Learning Center IncMA4247056NTNCWSGoshen30Bristol County
Tyngsboro Business Park Lot 1MA3301038NTNCWSTyngsborough100Middlesex County
Unified 2 Packaging GroupMA2147005NTNCWSLancaster50Worcester County
UnilockMA2304019NTNCWSBoston40Worcester County
Unitarian Universalist Area ChurchMA3269003NTNCWSSherborn31Middlesex County
United Church Of Christ/DaycareMA2037028NTNCWSBoxborough100Middlesex County
V A Boston Healthcare System BrocktonMA4044013NTNCWSBrockton1,500Plymouth County
Vacation Village In The BerkshiresMA1121010NTNCWSWilliamstown400Berkshire County
Vantage At HampdenMA1120001CWSHampden100Hampden County
Verizon Business Network Services, Inc.MA2054070NTNCWSCharlton35Worcester County
Viant As And O Holding LlcMA1043025NTNCWSBrimfield90Hampden County
View Drive Water AssociationMA1249008CWSRichmond38Berkshire County
Village At Highland ParkMA2139007CWSWhitinsville50Middlesex County
Village Nursery SchoolMA2125005NTNCWSHarvard50Worcester County
Village SchoolMA1255005NTNCWSRoyalston42Worcester County
Villages At StowMA2286024CWSNashua300Middlesex County
Wachusett Mountain Ski AreaMA2241002NTNCWSPrinceton2,500Worcester County
Wagon Wheel Community, Inc.MA2045004CWSBrookfield228Worcester County
Wales Elementary SchoolMA1306004NTNCWSWales108Hampden County
Warren Water DistrictMA1311000CWSWarren2,289Worcester County
Warwick Community SchoolMA1312012NTNCWSWarwick100Franklin County
Washington AcresMA1024015CWSBelchertown30Hampshire County
Waterview Park LlcMA4052044CWSPlymouth102Plymouth County
Waubeeka SpringsMA1341004CWSWilliamstown50Berkshire County
Webco Chemical CorporationMA2080003NTNCWSDudley75Worcester County
Wee Folk Farm DaycareMA4003010NTNCWSAcushnet25Bristol County
Wee Forest FolkMA3051019NTNCWSCarlisle25Middlesex County
Wellesley CollegeMA3317001CWSWellesley3,000Norfolk County
Wellfleet ApartmentsMA4318107CWSOrleans48Barnstable County
Wellfleet Municipal Water SystemMA4318094CWSWellfleet750Barnstable County
West Brookfield Water DepartmentMA2323000CWSWest Brookfield3,217Worcester County
West Cummington Water DeptMA1069002CWSCummington110Hampshire County
West Groton Water Supply DistrictMA2115001CWSGroton1,853Middlesex County
West Parish Of BarnstableMA4020020NTNCWSWest Barnstable75Barnstable County
West Stockbridge Water DeptMA1326000CWSWest Stockbridge535Berkshire County
West Tisbury Elementary SchoolMA4296005NTNCWSWest Tisbury375Dukes County
West Warren Water DistrictMA1311001CWSWest Warren927Worcester County
Westhampton Elementary SchoolMA1331007NTNCWSWesthampton148Hampshire County
Westover ArbMA1061003NTNCWSChicopee950Hampden County
Westport Country Day SchoolMA4334073NTNCWSWestport55Bristol County
Westport Harbor Water Association IncMA4334001NTNCWSWestport200Bristol County
Westport Legion LlcMA4334075NTNCWSFall River25Bristol County
Westport School AdministrationMA4334012NTNCWSWestport74Bristol County
Westport Schools ComplexMA4334094NTNCWSWestport1,472Bristol County
Westport Senior VillageMA4334088CWSWestport150Bristol County
Wheelwright Water DistrictMA1124002CWSWheelwright300Worcester County
White Birch Garden ApartmentsMA1120015CWSChicopee25Hampden County
White Pines CondominiumsMA1283015CWSLenox225Berkshire County
Whitney Estates CondominiumsMA2028015CWSBerlin40Worcester County
Wildwood CondominiumMA1108009CWSGoshen25Hampshire County
Wilkinsonville Water DistrictMA2290014CWSSutton2,773Worcester County
Williamsburg Water DeptMA1340000CWSHaydenville1,575Hampshire County
Willows At BoxfordMA3038028CWSLexington132Essex County
Woodhaven Elder Housing CommitteeMA3269002CWSSherborn30Middlesex County
Woodland Mhp LlcMA1053030CWSCharlemont36Franklin County
Woodland RidgeMA2270009CWSLeominster125Middlesex County
Woodland Walk ApartmentsMA2054040CWSSpringfield76Worcester County
Woodward VillageMA3051023CWSConcord54Middlesex County
Worthington Fire DistrictMA1349000CWSWorthington565Hampshire County
Wrentham Developmental CenterMA4350001CWSWrentham937Norfolk County