What's in WALTHAM WATER DEPARTMENT's water?
WALTHAM 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: 65,218, over 14,042 connections.
Ranked against every other system in this dataset
WALTHAM WATER DEPARTMENT has 15 violations on record in total, 11 of thems health-based - ranking it 1,832th of 12,903 systems by violation count, the 86th percentile nationally.
Against the MA average
MA's 283 covered systems average 7.0 health-based violations each; WALTHAM WATER DEPARTMENT carries 11, more than typical for the state. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
WALTHAM WATER DEPARTMENT's most recent violation on record is dated 2025-01-01, with the most recent health-based one dated 2013-01-09. Last reported to EPA: 06/22/2026.
The concern categories on record
WALTHAM 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:
- Lead & copper - flagged from: Lead and Copper Rule
- Microbial contamination / treatment technique - flagged from: Coliform (TCR); Surface Water Treatment Rule
The most severe category on record is lead & copper, which points toward a lead-class filter if you want to address it directly.
What WALTHAM WATER DEPARTMENT's record does not cover
This is what WALTHAM 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. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 15 logged violations can see. The guide to what this data misses covers that gap.