Massachusetts Water Quality
Health violation data for 564 community water systems in Massachusetts. Based on EPA Safe Drinking Water Information System (SDWIS) data.
Water Systems
564
Total Violations
1,106
Systems with Violations
50
Cities with Issues
196
Water Systems with Most Violations
| # | Water System | Violations | Health |
|---|---|---|---|
| 1 | TWIN OAKS MHP MIDLAND Savoy | 65 | Yes |
| 2 | CHERRY VALLEY/ ROCHDALE WATER DISTRICT Rochdale | 48 | Yes |
| 3 | BOUMIL GROVE CONDOS Andover | 35 | Yes |
| 4 | RAYMOND WOODS TOWNHOUSES Scituate | 32 | Yes |
| 5 | SPRINGFIELD WATER AND SEWER COMMISSION Springfield | 27 | Yes |
| 6 | LONGMEADOW WATER DEPT Longmeadow | 26 | Yes |
| 7 | MOUNT ST MARYS ABBEY Wrentham | 26 | Yes |
| 8 | MONROE WATER DISTRICT Monroe | 23 | Yes |
| 9 | BELLINGHAM DPW WATER SEWER DIVISION Bellingham | 23 | Yes |
| 10 | DARTMOUTH WATER DIVISION Dartmouth | 22 | Yes |
| 11 | COUNTRY MANOR Norton | 21 | Yes |
| 12 | HANOVER WATER DEPT Hanover | 21 | Yes |
| 13 | MADDEN ESTATES West Brookfield | 20 | Yes |
| 14 | PLAINVILLE WATER DEPARTMENT Plainville | 20 | Yes |
| 15 | SWANSEA WATER DISTRICT Swansea | 20 | Yes |
| 16 | SOMERSET WATER DEPARTMENT Somerset | 18 | Yes |
| 17 | THREE RIVERS M H COMMUNITY Sudbury | 15 | Yes |
| 18 | RUTLAND WATER DEPARTMENT Rutland | 14 | Yes |
| 19 | CHESTER WATER DEPT Chester | 12 | Yes |
| 20 | EAST LONGMEADOW DPW WATER DEPT East Longmeadow | 12 | Yes |
| 21 | HOLLISTON WATER DEPARTMENT Holliston | 12 | Yes |
| 22 | MAYNARD DPW, WATER DIVISION Maynard | 12 | Yes |
| 23 | FAWN RIDGE ASSOCIATION INC. Charlton | 11 | Yes |
| 24 | THE DOX CONDOS Northbridge | 11 | Yes |
| 25 | AGAWAM WATER DEPARTMENT Agawam | 10 | Yes |
| 26 | MELROSE WATER DIVISION (MWRA) Melrose | 9 | Yes |
| 27 | NORTH READING WATER DEPT. North Reading | 9 | Yes |
| 28 | NORTON WATER DEPARTMENT Norton | 9 | Yes |
| 29 | SCITUATE WATER DIVISION Scituate | 9 | Yes |
| 30 | REVEL PELHAM Westborough | 9 | Yes |
| 31 | MILL RIVER WATER TAKERS ASSOCIATION Mill River | 8 | Yes |
| 32 | MEDFORD WATER DEPT. (MWRA) Medford | 8 | Yes |
| 33 | BROOKWOOD APARTMENTS Marblehead | 7 | Yes |
| 34 | HOUSATONIC WATER WORKS Great Barrington | 7 | Yes |
| 35 | WESTMINSTER DEPARTMENT OF PUBLIC WORKS Westminster | 7 | Yes |
| 36 | BILLERICA WATER WORKS Billerica | 7 | Yes |
| 37 | CHELSEA WATER DEPT. (MWRA) Chelsea | 7 | Yes |
| 38 | LOWELL REGIONAL WATER UTILITY Lowell | 7 | Yes |
| 39 | MALDEN WATER DIVISION (MWRA) Malden | 7 | Yes |
| 40 | STONEHAM WATER DEPT (MWRA SUPPLY) Stoneham | 7 | Yes |
| 41 | GREAT BARRINGTON FIRE DIST Great Barrington | 6 | Yes |
| 42 | EVERETT WATER DEPT. (MWRA) Everett | 6 | Yes |
| 43 | SOMERVILLE WATER DEPT. (MWRA) Somerville | 6 | Yes |
| 44 | WESTON WATER DEPT. Weston | 6 | Yes |
| 45 | FALMOUTH WATER DEPT Falmouth | 6 | Yes |
| 46 | SOUTH DEERFIELD WATER SUPPLY DISTRICT South Deerfield | 5 | Yes |
| 47 | LEOMINSTER WATER DIVISION Leominster | 5 | Yes |
| 48 | CONCORD WATER DEPT Concord | 5 | Yes |
| 49 | MILTON WATER DEPT. (MWRA) Milton | 5 | Yes |
| 50 | REVERE WATER DIVISION (MWRA) Revere | 5 | Yes |
Most Common Contaminants in Massachusetts
| Contaminant | Violations | Systems Affected |
|---|---|---|
| Combined Radium 226/228 | 287 | 121 |
| Total Trihalomethanes (TTHM) | 259 | 30 |
| Haloacetic Acids (HAA5) | 108 | 11 |
| E. coli | 101 | 49 |
| Lead & Copper Rule | 55 | 5 |
| Nitrate | 54 | 2 |
| Barium | 40 | 5 |
| Copper | 38 | 2 |
| Fluoride | 27 | 15 |
| Chlorine | 26 | 14 |
| Arsenic | 25 | 13 |
| Total Coliform (RTCR) | 21 | 14 |
| Contaminant 2987 | 14 | 1 |
| Contaminant 1011 | 12 | 2 |
| Lead (Action Level) | 11 | 1 |
Cities with Water Quality Issues
Agawam Belchertown Chicopee East Longmeadow Northampton Palmer South Hadley Ware Westfield Wilbraham Springfield Pittsfield Lee North Adams Greenfield South Deerfield Fitchburg Devens Gardner Leominster Littleton Lunenburg Pepperell Westminster Auburn Charlton Clinton Holden Millbury Northbridge North Brookfield Oxford Spencer Sterling Sturbridge Uxbridge Dudley Westborough West Brookfield Worcester +156 more
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About This Data
Water quality data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations. Only community water systems (CWS) in Massachusetts are included.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.