Is SOMERVILLE WATER DEPT. (MWRA)'s water safe to drink?
SOMERVILLE WATER DEPT. (MWRA) has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 81,045 people through 14,919 service connections.
Ranked against every other system in this dataset
SOMERVILLE WATER DEPT. (MWRA) has 15 violations on record in total, 12 of thems health-based - ranking it 1,649th of 12,903 systems by violation count, the 87th percentile nationally.
How SOMERVILLE WATER DEPT. (MWRA) compares within MA
SOMERVILLE WATER DEPT. (MWRA)'s 12 health-based violations sit above the MA average of 7.0, across 283 systems statewide. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
The last violation EPA has on record for SOMERVILLE WATER DEPT. (MWRA) is from 2020-01-01 (health-based: 2019-01-11). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
SOMERVILLE WATER DEPT. (MWRA)'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); 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 this data is and is not
Everything on this page is SOMERVILLE WATER DEPT. (MWRA)'s own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Between the utility's meter and SOMERVILLE WATER DEPT. (MWRA)'s customers' taps is household plumbing, invisible to a system-level record ranked 1,649th of 12,903 by violation count. The guide to what this data misses covers that gap.