UNION GAP WATER: EPA violation history, explained
UNION GAP WATER has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 6,433 people get their water from it, across 1,981 connections.
How this compares nationally
Out of 12,903 systems in this dataset, UNION GAP WATER ranks 3,552th by violation burden (72th percentile) - 24 violations total, 5 health-baseds.
How UNION GAP WATER compares within WA
UNION GAP WATER's 5 health-based violations sit above the WA average of 3.7, across 322 systems statewide. See the lead and copper guide for why lead counts differently.
Most recent violation on record
The last violation EPA has on record for UNION GAP WATER is from 2017-01-12 (health-based: 2005-01-02). Last reported to EPA: 06/19/2026.
What kind of problem, specifically
UNION GAP WATER'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
Everything on this page is UNION GAP WATER's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Between the utility's meter and UNION GAP WATER's customers' taps is household plumbing, invisible to a system-level record ranked 3,552th of 12,903 by violation count. The guide to what this data misses covers that gap.