What's in CHELMSFORD WATER DISTRICT's water?
CHELMSFORD WATER DISTRICT has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 28,750 people through 8,388 service connections.
Ranked against every other system in this dataset
6 total violations and 1 health-based ones put CHELMSFORD WATER DISTRICT at the 34th percentile nationally for violation burden, rank 8,537 of 12,903.
How CHELMSFORD WATER DISTRICT compares within MA
MA's 283 covered systems average 7.0 health-based violations each; CHELMSFORD WATER DISTRICT carries 1, not 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 CHELMSFORD WATER DISTRICT is from 2014-01-07 (health-based: 1991-01-02). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
CHELMSFORD WATER DISTRICT'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:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What this data is and is not
CHELMSFORD WATER DISTRICT'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. Between the utility's meter and CHELMSFORD WATER DISTRICT's customers' taps is household plumbing, invisible to a system-level record ranked 8,537th of 12,903 by violation count. The guide to what this data misses covers that gap.