AYER DPW WATER DIVISION: EPA violation history, explained
AYER DPW WATER DIVISION has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 8,479 people get their water from it, across 3,406 connections.
How this compares nationally
30 total violations and 2 health-based ones put AYER DPW WATER DIVISION at the 53th percentile nationally for violation burden, rank 6,071 of 12,903.
Against the MA average
Among the 283 MA systems in this dataset, the average is 7.0 health-based violations - AYER DPW WATER DIVISION's 2 is at or below that. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
AYER DPW WATER DIVISION's most recent violation on record is dated 2023-01-07, with the most recent health-based one dated 2000-01-09. Last reported to EPA: 06/22/2026.
The concern categories on record
AYER DPW WATER DIVISION'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 AYER DPW WATER DIVISION's record does not cover
This is what AYER DPW WATER DIVISION 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 30 logged violations can see. The guide to what this data misses covers that gap.