MATTAPOISETT WATER DEPARTMENT: EPA violation history, explained

MATTAPOISETT WATER DEPARTMENT has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 7,685, over 3,240 connections.

MATTAPOISETT WATER DEPARTMENT's record against the rest of the country

MATTAPOISETT WATER DEPARTMENT has 11 violations on record in total, 9 of thems health-based - ranking it 2,260th of 12,903 systems by violation count, the 82th percentile nationally.

How MATTAPOISETT WATER DEPARTMENT compares within MA

MATTAPOISETT WATER DEPARTMENT's 9 health-based violations sit above the MA average of 7.0, across 283 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 MATTAPOISETT WATER DEPARTMENT is from 2015-01-11 (health-based: 2015-01-11). Last reported to EPA: 06/22/2026.

What kind of problem, specifically

MATTAPOISETT WATER DEPARTMENT'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

Everything on this page is MATTAPOISETT WATER DEPARTMENT'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 MATTAPOISETT WATER DEPARTMENT's customers' taps is household plumbing, invisible to a system-level record ranked 2,260th of 12,903 by violation count. The guide to what this data misses covers that gap.