Public Water Systems
1,599 active public water systems in MA, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| North Chelmsford Water Dist | North Chelmsford, MA | 7,498 | 14 | Clean |
| Hamilton Water Dept | Hamilton, MA | 7,377 | 84 | Detected |
| Aquarion Water Company Oxford | Millbury, MA | 7,343 | 10 | Detected |
| Williamstown Water Dept | Williamstown, MA | 7,326 | 17 | Clean |
| Middleton Water Dept. | Middleton, MA | 7,255 | 18 | Detected |
| Merrimac Water Department | Merrimac, MA | 7,193 | 276 | Detected |
| Lunenburg Water District | Lunenburg, MA | 7,145 | 28 | Detected |
| West Boylston Water District | West Boylston, MA | 7,132 | 163 | Detected |
| Spencer Water Department | Spencer, MA | 7,037 | 27 | Clean |
| Sterling Water Department | Sterling, MA | 6,754 | 183 | Detected |
| Groveland Water Department | Groveland, MA | 6,743 | 46 | Detected |
| Orange Water Dept | Orange, MA | 6,526 | 22 | Detected |
| Devens Massdevelopment | Devens, MA | 6,500 | 49 | Detected |
| Townsend Water Department | Townsend, MA | 6,500 | 246 | Detected |
| Dalton Fire District | Dalton, MA | 6,330 | 68 | Clean |
| Rowley Water Department | Rowley, MA | 6,283 | 112 | Detected |
| South Hadley Fire District #2 Water Dept | South Hadley, MA | 6,200 | 81 | Clean |
| Town of Eastham | Eastham, MA | 6,199 | 1 | Clean |
| Templeton Munic. Light and Water Plant | Baldwinville, MA | 6,152 | 215 | Detected |
| Tisbury Water Works | Tisbury, MA | 6,082 | 48 | Clean |
| Hopedale Water Department | Hopedale, MA | 6,017 | 68 | Detected |
| Lancaster Water Department | Lancaster, MA | 6,000 | 49 | Clean |
| Otis Air National Guard Base | Otis Angb, MA | 6,000 | 28 | Clean |
| Marion Water Division | Marion, MA | 5,761 | 42 | Clean |
| Winchendon Water Department | Winchendon, MA | 5,706 | 83 | Clean |
| Rutland Water Department | Rutland, MA | 5,605 | 65 | Clean |
| Lincoln Water Dept | Lincoln, MA | 5,593 | 90 | Detected |
| Dudley Water Department | Dudley, MA | 5,515 | 306 | Clean |
| Groton Water Department | Groton, MA | 5,456 | 110 | Detected |
| Topsfield Water Department | Topsfield, MA | 5,435 | 72 | Detected |
| Lee Water Dept | Lee, MA | 5,420 | 61 | Clean |
| Barnstable Fire District | Barnstable, MA | 5,400 | 26 | Detected |
| Onset Fire Districtwater Dept. | Onset, MA | 5,392 | 72 | Detected |
| Dighton Water District | North Dighton, MA | 5,264 | 24 | Detected |
| Manchester by the Sea Dpw | Manchester by the Sea, MA | 5,170 | 94 | Detected |
| Cotuit Fire District Water Department | Cotuit, MA | 4,938 | 33 | Clean |
| Hadley Dpw Water Division | Hadley, MA | 4,871 | 43 | Clean |
| Southampton Water Dept | Southampton, MA | 4,853 | 23 | Clean |
| Lynnfield Water Dist. (Mwra) | Lynnfield, MA | 4,820 | 14 | Clean |
| Palmer Water District No.1 | Palmer, MA | 4,789 | 29 | Clean |
| Town of Avon | Avon, MA | 4,777 | 92 | Detected |
| North Sagamore Water District | Sagamore Beach, MA | 4,668 | 21 | Detected |
| Sturbridge Water Department | Sturbridge, MA | 4,567 | 43 | Clean |
| Upton Dpw Water/Wastewater Division | Upton, MA | 4,420 | 169 | Clean |
| Douglas Water Department | Douglas, MA | 4,400 | 64 | Clean |
| Tyngsborough Water District | Tyngsborough, MA | 4,382 | 26 | Detected |
| Great Barrington Fire Dist | Great Barrington, MA | 4,375 | 219 | Clean |
| Paxton Water Department | Paxton, MA | 4,300 | 49 | Detected |
| Monson Water and Sewer Dept | Monson, MA | 4,212 | 65 | Clean |
| Shirley Water District | Shirley, MA | 4,121 | 89 | Detected |