Is HERMISTON, CITY OF's water safe to drink?
HERMISTON, CITY OF has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 20,000 people get their water from it, across 5,979 connections.
HERMISTON, CITY OF's record against the rest of the country
Out of 12,903 systems in this dataset, HERMISTON, CITY OF ranks 2,299th by violation burden (82th percentile) - 133 violations total, 8 health-baseds.
How HERMISTON, CITY OF compares within OR
HERMISTON, CITY OF's 8 health-based violations sit above the OR average of 6.0, across 160 systems statewide. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
The last violation EPA has on record for HERMISTON, CITY OF is from 2025-01-02 (health-based: 1998-01-12). Last reported to EPA: 06/26/2026.
What kind of problem, specifically
HERMISTON, CITY OF'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); Surface Water Treatment 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
HERMISTON, CITY OF'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 HERMISTON, CITY OF's customers' taps is household plumbing, invisible to a system-level record ranked 2,299th of 12,903 by violation count. The guide to what this data misses covers that gap.