What's in WELLESLEY WATER DIVISION's water?
WELLESLEY WATER DIVISION has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 29,550 people get their water from it, across 8,400 connections.
WELLESLEY WATER DIVISION's record against the rest of the country
WELLESLEY WATER DIVISION has 10 violations on record in total, 7 of thems health-based - ranking it 2,854th of 12,903 systems by violation count, the 78th percentile nationally.
How WELLESLEY WATER DIVISION compares within MA
Among the 283 MA systems in this dataset, the average is 7.0 health-based violations - WELLESLEY WATER DIVISION's 7 is above that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
The last violation EPA has on record for WELLESLEY WATER DIVISION is from 2022-01-07 (health-based: 2014-01-08). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
WELLESLEY WATER DIVISION'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
WELLESLEY WATER DIVISION's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. Between the utility's meter and WELLESLEY WATER DIVISION's customers' taps is household plumbing, invisible to a system-level record ranked 2,854th of 12,903 by violation count. The guide to what this data misses covers that gap.