What's in HAMILTON WATER DEPT's water?
HAMILTON WATER DEPT has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 7,674 people through 2,567 service connections.
How this compares nationally
67 total violations and 11 health-based ones put HAMILTON WATER DEPT at the 87th percentile nationally for violation burden, rank 1,715 of 12,903.
How HAMILTON WATER DEPT compares within MA
MA's 283 covered systems average 7.0 health-based violations each; HAMILTON WATER DEPT carries 11, 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 HAMILTON WATER DEPT is from 2019-01-01 (health-based: 2019-01-01). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
HAMILTON 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)
- Disinfection byproducts - flagged from: Total Haloacetic Acids (HAA5)
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
This is what HAMILTON WATER DEPT 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 67 logged violations can see. The guide to what this data misses covers that gap.