All water systems in Massachusetts
1,613 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Medway Water Department Medway · Norfolk County |
14,176 | 0 | 0 | |
|
Wayland Water Department Wayland · Middlesex County |
14,096 | 1 | 1 | |
|
Seekonk Water District Seekonk · Bristol County |
13,801 | 0 | 0 | |
|
Northborough Water Department (mwra) Northborough · Worcester County |
13,551 | 0 | 0 | |
|
Ipswich Dpu Water Dept Ipswich · Essex County |
13,138 | 1 | 1 | |
|
North Adams Water Dept North Adams · Berkshire County |
13,000 | 1 | 0 | |
|
Medfield Water Dept. Medfield · Norfolk County |
12,713 | 0 | 0 | |
|
Hopkinton Water Department Hopkinton · Middlesex County |
12,680 | 0 | 0 | |
|
Auburn Water District Auburn · Worcester County |
12,255 | 0 | 0 | |
|
Wrentham Water Division Wrentham · Norfolk County |
12,190 | 0 | 0 | |
|
Hanscom Afb Bedford · Middlesex County |
11,789 | 0 | 0 | |
|
Uxbridge Dpw, Water Division Uxbridge · Worcester County |
11,612 | 0 | 0 | |
|
Norwell Water Department Norwell · Plymouth County |
11,495 | 1 | 1 | |
|
Holbrook Public Works Dept Holbrook · Norfolk County |
11,405 | 2 | 1 | |
|
Ash/win Joint Water Authority Ashburnham · Worcester County |
11,394 | 0 | 0 | |
|
Weston Water Dept. Weston · Middlesex County |
11,391 | 0 | 0 | |
|
Aquarion Water Company, Millbury Millbury · Worcester County |
11,368 | 1 | 1 | |
|
Raynham Center Water District Raynham · Bristol County |
10,964 | 1 | 0 | |
|
Grafton Water District Grafton · Worcester County |
10,925 | 2 | 0 | |
|
Maynard Dpw, Water Division Maynard · Middlesex County |
10,746 | 3 | 0 | |
|
Southborough Dpw Water Division (mwra) Southborough · Worcester County |
10,638 | 0 | 0 | |
|
Athol Dpw Water Division Athol · Worcester County |
10,587 | 0 | 0 | |
|
Ware Water Dept Ware · Hampshire County |
10,066 | 0 | 0 | |
|
Rockport Water Dept Rockport · Essex County |
10,000 | 0 | 0 | |
|
Lenox Dpw Water Division Lenox · Berkshire County |
9,800 | 0 | 0 | |
|
Kenwood Water District Dracut · Middlesex County |
9,620 | 2 | 1 | |
|
Hanson Water Department Hanson · Plymouth County |
9,612 | 0 | 0 | |
|
Aquarion Water Company, Pinehills Plymouth · Plymouth County |
9,478 | 1 | 0 | |
|
Blackstone Water Department Blackstone · Worcester County |
9,463 | 0 | 0 | |
|
Littleton Water Department Littleton · Middlesex County |
9,334 | 1 | 0 | |
|
Salisbury Water Division Salisbury · Essex County |
9,334 | 1 | 0 | |
|
Pepperell Dpw Water Division Pepperell · Middlesex County |
9,217 | 0 | 0 | |
|
Millis Water Dept Millis · Norfolk County |
9,055 | 0 | 0 | |
|
Plainville Water Department Plainville · Norfolk County |
8,805 | 1 | 0 | |
|
Georgetown Water Department Georgetown · Essex County |
8,766 | 2 | 1 | |
|
Wilbraham Water Dept (mwra) Wilbraham · Hampden County |
8,533 | 1 | 0 | |
|
Lynnfield Center Water District Lynnfield · Essex County |
8,525 | 3 | 3 | |
|
Ayer Dpw Water Division Ayer · Middlesex County |
8,479 | 1 | 0 | |
|
Acushnet Water Department Acushnet · Bristol County |
8,430 | 0 | 0 | |
|
Northbridge Water Division Northbridge · Worcester County |
8,127 | 0 | 0 | |
|
Turners Falls Water Dept Montague · Franklin County |
8,080 | 0 | 0 | |
|
Edgartown Water Department Edgartown · Dukes County |
8,027 | 0 | 0 | |
|
Adams Fire District Adams · Berkshire County |
7,945 | 0 | 0 | |
|
Whitinsville Water Company Northbridge · Worcester County |
7,899 | 0 | 0 | |
|
West Bridgewater Water Dept West Bridgewater · Plymouth County |
7,709 | 1 | 0 | |
|
Buzzards Bay Water District Bourne · Barnstable County |
7,700 | 0 | 0 | |
|
Mattapoisett Water Department Mattapoisett · Plymouth County |
7,685 | 0 | 0 | |
|
Hamilton Water Dept Hamilton · Essex County |
7,674 | 0 | 0 | |
|
Southwick Water Dept Southwick · Hampden County |
7,669 | 0 | 0 | |
|
North Chelmsford Water Dist Chelmsford · Middlesex County |
7,660 | 2 | 2 |
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.