STROHS: EPA violation history, explained

STROHS has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 3,192 people get their water from it, across 1,169 connections.

How this compares nationally

STROHS has 17 violations on record in total, 4 of thems health-based - ranking it 4,242th of 12,903 systems by violation count, the 67th percentile nationally.

Against the WA average

WA's 322 covered systems average 3.7 health-based violations each; STROHS carries 4, more than typical for the state. See the lead and copper guide for why lead counts differently.

Most recent violation on record

STROHS's most recent violation on record is dated 2008-01-01, with the most recent health-based one dated 2006-01-01. Last reported to EPA: 06/19/2026.

The concern categories on record

STROHS'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 STROHS's record does not cover

This is what STROHS 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 17 logged violations can see. The guide to what this data misses covers that gap.