LITTLETON WATER DEPARTMENT: EPA violation history, explained

LITTLETON WATER DEPARTMENT has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 9,307 people through 3,347 service connections.

How this compares nationally

27 total violations and 13 health-based ones put LITTLETON WATER DEPARTMENT at the 89th percentile nationally for violation burden, rank 1,469 of 12,903.

How LITTLETON WATER DEPARTMENT compares within MA

MA's 283 covered systems average 7.0 health-based violations each; LITTLETON WATER DEPARTMENT carries 13, more than typical for the state. See the lead and copper guide for why lead counts differently.

Most recent violation on record

The last violation EPA has on record for LITTLETON WATER DEPARTMENT is from 2023-01-07 (health-based: 2014-01-09). Last reported to EPA: 06/22/2026.

What kind of problem, specifically

LITTLETON 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

This is what LITTLETON WATER DEPARTMENT 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. Between the utility's meter and LITTLETON WATER DEPARTMENT's customers' taps is household plumbing, invisible to a system-level record ranked 1,469th of 12,903 by violation count. The guide to what this data misses covers that gap.