Is CTWC - UNIONVILLE SYSTEM's water safe to drink?
CTWC - UNIONVILLE SYSTEM had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. 14,693 people get their water from it, across 6,319 connections.
Ranked against every other system in this dataset
CTWC - UNIONVILLE SYSTEM has 7 violations on record in total, 3 of thems health-based - ranking it 5,430th of 12,903 systems by violation count, the 58th percentile nationally.
How CTWC - UNIONVILLE SYSTEM compares within CT
Among the 73 CT systems in this dataset, the average is 2.6 health-based violations - CTWC - UNIONVILLE SYSTEM's 3 is above that. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
The last violation EPA has on record for CTWC - UNIONVILLE SYSTEM is from 2026-01-05 (health-based: 2026-01-05). Last reported to EPA: 06/29/2026.
What kind of problem, specifically
CTWC - UNIONVILLE SYSTEM'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); Groundwater Rule
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
CTWC - UNIONVILLE SYSTEM'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 CTWC - UNIONVILLE SYSTEM's customers' taps is household plumbing, invisible to a system-level record ranked 5,430th of 12,903 by violation count. The guide to what this data misses covers that gap.