All water systems in Massachusetts
1,613 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Monson Water and Sewer Dept Monson · Hampden County |
4,222 | 0 | 0 | |
|
Shirley Water District Shirley · Middlesex County |
4,165 | 4 | 2 | |
|
Wenham Water Dept. Wenham · Essex County |
3,942 | 0 | 0 | |
|
North Raynham Water District Raynham · Bristol County |
3,902 | 0 | 0 | |
|
Westminster Department of Public Works Westminster · Worcester County |
3,889 | 1 | 0 | |
|
North Brookfield Water Department North Brookfield · Worcester County |
3,863 | 0 | 0 | |
|
South Deerfield Water Supply District Deerfield · Franklin County |
3,800 | 0 | 0 | |
|
Cherry Valley/ Rochdale Water District Leicester · Worcester County |
3,696 | 1 | 1 | |
|
Ashburnham Water Department Ashburnham · Worcester County |
3,680 | 1 | 0 | |
|
Essex Water Dept. Essex · Essex County |
3,675 | 0 | 0 | |
|
McI Shirley Shirley · Middlesex County |
3,500 | 0 | 0 | |
|
Boylston Water District Boylston · Worcester County |
3,343 | 1 | 0 | |
|
Nahant Water Dept. (mwra) Nahant · Essex County |
3,334 | 1 | 1 | |
|
South Grafton Water District Grafton · Worcester County |
3,262 | 3 | 2 | |
|
Three Rivers Fire District Palmer · Hampden County |
3,258 | 1 | 1 | |
|
Belchertown Water District Belchertown · Hampshire County |
3,253 | 0 | 0 | |
|
West Brookfield Water Department West Brookfield · Worcester County |
3,217 | 0 | 0 | |
|
Leicester Water Supply District Leicester · Worcester County |
3,200 | 0 | 0 | |
|
Sunderland Water District Sunderland · Franklin County |
3,190 | 0 | 0 | |
|
Hatfield Water Dept Hatfield · Hampshire County |
3,164 | 1 | 1 | |
|
Hanscom Family Housing (landings) Lincoln · Middlesex County |
3,067 | 1 | 1 | |
|
Dcr Horseneck Beach State Reservation Westport · Bristol County |
3,000 | 0 | 0 | |
|
Hale Education, Inc. Westwood · Norfolk County |
3,000 | 1 | 0 | |
|
Pilot Travel Center Sturbridge · Worcester County |
3,000 | 0 | 0 | |
|
Siasconset Water Department Nantucket · Nantucket County |
3,000 | 3 | 1 | |
|
Wellesley College Wellesley · Norfolk County |
3,000 | 1 | 1 | |
|
Plymouth South High School Plymouth · Plymouth County |
2,875 | 0 | 0 | |
|
McI Bridgewater Bridgewater · Plymouth County |
2,802 | 1 | 0 | |
|
East Chelmsford Water District Chelmsford · Middlesex County |
2,800 | 1 | 1 | |
|
Stockbridge Water Dept Stockbridge · Berkshire County |
2,800 | 0 | 0 | |
|
Wilkinsonville Water District Sutton · Worcester County |
2,773 | 1 | 0 | |
|
Barre Water Department Barre · Worcester County |
2,610 | 5 | 0 | |
|
Tewksbury Hospital Tewksbury · Middlesex County |
2,500 | 1 | 0 | |
|
Wachusett Mountain Ski Area Princeton · Worcester County |
2,500 | 0 | 0 | |
|
Agawam Springs Water Company Plymouth · Plymouth County |
2,380 | 1 | 0 | |
|
Lanesborough Fire and Water District Lanesborough · Berkshire County |
2,342 | 2 | 2 | |
|
Southfield Redevelopement Authority Weymouth · Norfolk County |
2,300 | 1 | 1 | |
|
Warren Water District Warren · Worcester County |
2,289 | 0 | 0 | |
|
Elm Hill Water District Auburn · Worcester County |
2,278 | 2 | 0 | |
|
Aquarion Water Company Ponds of Plymouth Plymouth · Plymouth County |
2,267 | 1 | 0 | |
|
Byfield Water District Newbury · Essex County |
2,228 | 0 | 0 | |
|
McI Norfolk/cedar Junction/walpole Norfolk · Norfolk County |
2,200 | 0 | 0 | |
|
Huntington Water Dept Huntington · Hampshire County |
2,180 | 1 | 1 | |
|
Freetown/lakeville Regional School Dist. Lakeville · Plymouth County |
1,991 | 0 | 0 | |
|
Aquarion Water Company (dover) Dover · Norfolk County |
1,929 | 2 | 2 | |
|
West Groton Water Supply District Groton · Middlesex County |
1,853 | 0 | 0 | |
|
Shelburne Falls Fire District Shelburne · Franklin County |
1,806 | 0 | 0 | |
|
Monument Mtn Regional HS Great Barrington · Berkshire County |
1,700 | 1 | 1 | |
|
Sutton Public Schools Sutton · Worcester County |
1,700 | 0 | 0 | |
|
Dorothy L Beckwith Middle School Rehoboth · Bristol County |
1,600 | 0 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules still in violation at EPA's latest data refresh.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Massachusetts records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.