Is LEXINGTON WATER DEPT. (MWRA)'s water safe to drink?
LEXINGTON 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. 34,074 people get their water from it, across 13,445 connections.
How this compares nationally
10 total violations and 7 health-based ones put LEXINGTON WATER DEPT. (MWRA) at the 78th percentile nationally for violation burden, rank 2,853 of 12,903.
How LEXINGTON WATER DEPT. (MWRA) compares within MA
MA's 283 covered systems average 7.0 health-based violations each; LEXINGTON WATER DEPT. (MWRA) carries 7, more than typical for the state. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
The last violation EPA has on record for LEXINGTON WATER DEPT. (MWRA) is from 2025-01-01 (health-based: 1999-01-01). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
LEXINGTON 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
LEXINGTON WATER DEPT. (MWRA)'s numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. This record - 7 health-based violations on file for LEXINGTON WATER DEPT. (MWRA) - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.