Is STONEHAM WATER DEPT (MWRA SUPPLY)'s water safe to drink?
STONEHAM WATER DEPT (MWRA SUPPLY) has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 23,244 people through 6,320 service connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, STONEHAM WATER DEPT (MWRA SUPPLY) ranks 1,274th by violation burden (90th percentile) - 18 violations total, 15 health-baseds.
Against the MA average
STONEHAM WATER DEPT (MWRA SUPPLY)'s 15 health-based violations sit above the MA average of 7.0, across 283 systems statewide. See the lead and copper guide for why lead counts differently.
Most recent violation on record
STONEHAM WATER DEPT (MWRA SUPPLY)'s most recent violation on record is dated 2018-01-09, with the most recent health-based one dated 2018-01-09. Last reported to EPA: 06/22/2026.
The concern categories on record
STONEHAM WATER DEPT (MWRA SUPPLY)'s flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Lead & copper - flagged from: Lead and Copper Rule
- Microbial contamination / treatment technique - flagged from: Coliform (TCR); Revised Total Coliform Rule; Surface Water Treatment Rule
The most severe category on record is lead & copper, which points toward a lead-class filter if you want to address it directly.
What STONEHAM WATER DEPT (MWRA SUPPLY)'s record does not cover
This is what STONEHAM WATER DEPT (MWRA SUPPLY) reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 18 logged violations can see. The guide to what this data misses covers that gap.