Maine Water Quality
According to EPA Safe Drinking Water Information System (SDWIS), Maine has 360 active community water systems in this extract. PlainEnviro's health-based slice lists 832 violation records across 50 systems with at least one such row. These are historical EPA registry counts, not a statewide drinkability score.
Health-based violation records for 360 community water systems in Maine. Source: EPA Safe Drinking Water Information System (SDWIS).
Water Systems with Most Health-Based Records
| # | Water System | Health-Based Records | Health |
|---|---|---|---|
| 1 | MARS HILL AND BLAINE WATER COMPANY Mars Hill | 126 | Yes |
| 2 | LORING DEVELOPMENT AUTHORITY Wiscasset | 64 | Yes |
| 3 | LONG POND WATER DISTRICT Sullivan | 58 | Yes |
| 4 | US COAST GUARD STATION-JONESPORT Waterville | 47 | Yes |
| 5 | UNITY BY THE STREAM LLC Hampden | 43 | Yes |
| 6 | SUGARLOAF WATER ASSOCIATION Carrabassett Valley | 28 | Yes |
| 7 | ELLSWORTH WATER DEPARTMENT Ellsworth | 22 | Yes |
| 8 | JACKMAN UTILITY DISTRICT Jackman | 22 | Yes |
| 9 | VINALHAVEN WATER DISTRICT Poland | 22 | Yes |
| 10 | JAY VILLAGE WATER DISTRICT Jay | 18 | Yes |
| 11 | BOUDREAU TRAILER PARK Princeton | 15 | Yes |
| 12 | HEBRON WATER COMPANY Turner | 14 | Yes |
| 13 | STONINGTON WATER COMPANY Winterport | 12 | Yes |
| 14 | ST. JOHN'S RIVER CLUB UTILITIES Gray | 11 | Yes |
| 15 | POLAND COUNTRY VILLAGE MHP INC East Poland | 11 | Yes |
| 16 | CRYSTAL SPRING ESTATES Dover-foxcroft | 10 | Yes |
| 17 | BERWICK WATER DEPARTMENT Saco | 10 | Yes |
| 18 | SOUTH BERWICK WATER DISTRICT South Berwick | 10 | Yes |
| 19 | WEST PARIS WATER DISTRICT West Paris | 10 | Yes |
| 20 | VILLAGE AT ROCKPORT #1 Camden | 10 | Yes |
| 21 | SPINSFIELD COMMONS Bangor | 10 | Yes |
| 22 | HALLOWELL ROAD MOBILE HOME PARK | 10 | Yes |
| 23 | PITTSFIELD WATER DEPT Winterport | 9 | Yes |
| 24 | PASSAMAQUODDY WATER DISTRICT Eastport | 7 | Yes |
| 25 | GRAY WATER DISTRICT Gray | 7 | Yes |
| 26 | GAELIC SQUARE HOUSING Bangor | 7 | Yes |
| 27 | SOUTHWEST HARBOR WATER & SEWER DISTRICT Southwest Harbor | 7 | Yes |
| 28 | HARMON PINES DEVELOPMENT Portland | 7 | Yes |
| 29 | SUNRISE SERENITY TP Sabattus | 7 | Yes |
| 30 | BUCKFIELD VILLAGE CORPORATION Richmond | 6 | Yes |
| 31 | CANTON WATER DISTRICT Canton | 6 | Yes |
| 32 | SUNNY GABLES- GLENBURN HOUSING Bangor | 6 | Yes |
| 33 | LIVERMORE FALLS WATER DISTRICT Livermore Falls | 6 | Yes |
| 34 | WALDOBORO WATER DEPT Poland | 6 | Yes |
| 35 | BLUE HILL TERRACE Stonington | 6 | Yes |
| 36 | STONINGTON MANOR Stonington | 6 | Yes |
| 37 | HINGHAM HEIGHTS | 6 | Yes |
| 38 | LISBON WATER DEPARTMENT Lisbon | 5 | Yes |
| 39 | MONSON UTILITIES DISTRICT Monson | 5 | Yes |
| 40 | PIPER STREAM MOBILE HOME PARK Swanville | 5 | Yes |
| 41 | 322 ROOSEVELT TRAIL Westbrook | 4 | Yes |
| 42 | NORTH BERWICK WATER DISTRICT North Berwick | 4 | Yes |
| 43 | ST FRANCIS WATER DEPARTMENT St Francis | 4 | Yes |
| 44 | POND & POND TRAILER PARK Naples | 4 | Yes |
| 45 | HANCOCK VILLAGE MHP Castine | 3 | Yes |
| 46 | SQUIRE COURT LLC Portland | 3 | Yes |
| 47 | BIRCH HAVEN TRAILER PARK Ellsworth | 3 | Yes |
| 48 | TOWN & COUNTRY TRAILER PARK Alfred | 3 | Yes |
| 49 | MAINE WATER COMPANY BIDDEFORD SACO DIV Poland | 3 | Yes |
| 50 | GREAT SALT BAY SANITARY DISTRICT Damariscotta | 3 | Yes |
Most Common Contaminants in Maine
| Contaminant | Violations | Systems Affected |
|---|---|---|
| TTHM | 261 | 16 |
| Total Haloacetic Acids (HAA5) | 191 | 11 |
| Lead and Copper Rule | 127 | 65 |
| Arsenic | 106 | 11 |
| Revised Total Coliform Rule | 61 | 20 |
| Gross Alpha, Excl. Radon and U | 17 | 2 |
| Interim Enhanced Surface Water Treatment Rule | 15 | 4 |
| Surface Water Treatment Rule | 13 | 6 |
| Combined Uranium | 8 | 3 |
| Nitrate | 8 | 3 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | 5 | 2 |
| Coliform (TCR) | 4 | 3 |
| Cadmium | 2 | 1 |
| LEAD AND COPPER RULE REVISIONS | 1 | 1 |
| Combined Radium (-226 and -228) | 1 | 1 |
Cities with Water Quality Issues
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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 Maine are included.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.