Total Haloacetic Acids (HAA5) violations in Massachusetts
33 active public water systems in Massachusetts had a Total Haloacetic Acids (HAA5) violation in the past three years, 2 of them in the latest quarter of EPA's data. What Total Haloacetic Acids (HAA5) is and why it matters.
Systems with a Total Haloacetic Acids (HAA5) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Springfield Water and Sewer Commission Springfield · Hampden County |
169,170 | 1 | 0 | |
|
Otis Air National Guard Base Falmouth · Barnstable County |
6,000 | 2 | 2 | |
|
Fall River Water Department Fall River · Bristol County |
94,000 | 2 | 1 | |
|
Chicopee Water Dept (mwra) Chicopee · Hampden County |
55,560 | 2 | 1 | |
|
Hyannis Water System, Town of Barnstable Barnstable · Barnstable County |
35,000 | 1 | 0 | |
|
Agawam Water Department Agawam · Hampden County |
28,692 | 1 | 0 | |
|
Wakefield Water Dept Wakefield · Middlesex County |
27,090 | 2 | 1 | |
|
Walpole Water Dept Walpole · Norfolk County |
24,070 | 1 | 0 | |
|
Canton Water Dept Canton · Norfolk County |
22,766 | 2 | 1 | |
|
Westborough Water Department Westborough · Worcester County |
21,567 | 4 | 0 | |
|
Swansea Water District Swansea · Bristol County |
17,375 | 1 | 0 | |
|
South Hadley FD #1 (mwra) South Hadley · Hampshire County |
14,800 | 1 | 0 | |
|
North Adams Water Dept North Adams · Berkshire County |
13,000 | 1 | 0 | |
|
Holbrook Public Works Dept Holbrook · Norfolk County |
11,405 | 2 | 1 | |
|
Georgetown Water Department Georgetown · Essex County |
8,766 | 2 | 1 | |
|
Wilbraham Water Dept (mwra) Wilbraham · Hampden County |
8,533 | 1 | 0 | |
|
Sterling Water Department Sterling · Worcester County |
6,814 | 2 | 0 | |
|
Shirley Water District Shirley · Middlesex County |
4,165 | 4 | 2 | |
|
Elm Hill Water District Auburn · Worcester County |
2,278 | 2 | 0 | |
|
Aquarion Water Company Ponds of Plymouth Plymouth · Plymouth County |
2,267 | 1 | 0 | |
|
Carver High School and Middle School Carver · Plymouth County |
1,200 | 1 | 0 | |
|
Summer Village Westford · Middlesex County |
1,000 | 2 | 1 | |
|
Chester Water Dept Chester · Hampden County |
750 | 3 | 1 | |
|
Blandford Water Dept Blandford · Hampden County |
442 | 3 | 2 | |
|
Ashfield Water District Ashfield · Franklin County |
400 | 2 | 1 | |
|
Millbury Ind. Park/ Park Hill Village Millbury · Worcester County |
400 | 5 | 0 | |
|
Millville Elementary School Millville · Worcester County |
400 | 3 | 0 | |
|
Linden Ponds Hingham · Plymouth County |
384 | 3 | 0 | |
|
Masters Academy International Stow · Middlesex County |
225 | 4 | 0 | |
|
Monroe Water District Monroe · Franklin County |
55 | 3 | 2 | |
|
Pinewood on the Green Condos Oxford · Worcester County |
50 | 1 | 0 | |
|
Foxglove Apartments Harvard · Worcester County |
40 | 1 | 0 | |
|
Lfb USA 92 (rabbit) Charlton · Worcester County |
25 | 1 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Total Haloacetic Acids (HAA5), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Total Haloacetic Acids (HAA5) alone.
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.