WINCHESTER WATER DEPT: EPA violation history, explained
WINCHESTER WATER DEPT has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 2,800, over 1,128 connections.
WINCHESTER WATER DEPT's record against the rest of the country
Out of 12,903 systems in this dataset, WINCHESTER WATER DEPT ranks 5,598th by violation burden (57th percentile) - 4 violations total, 3 health-baseds.
How WINCHESTER WATER DEPT compares within NH
WINCHESTER WATER DEPT's 3 health-based violations sit within the NH average of 8.6, across 62 systems statewide. 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 WINCHESTER WATER DEPT is from 2016-01-07 (health-based: 1996-01-07). Last reported to EPA: 06/23/2026.
What kind of problem, specifically
WINCHESTER WATER DEPT'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)
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 WINCHESTER WATER DEPT'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 WINCHESTER WATER DEPT's customers' taps is household plumbing, invisible to a system-level record ranked 5,598th of 12,903 by violation count. The guide to what this data misses covers that gap.