What's in TUALATIN VALLEY WATER DISTRICT's water?

TUALATIN VALLEY WATER DISTRICT's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. Population served: 224,600, over 62,160 connections.

Ranked against every other system in this dataset

TUALATIN VALLEY WATER DISTRICT has 2 violations on record in total, 0 of thems health-based - ranking it 11,857th of 12,903 systems by violation count, the 8th percentile nationally.

How TUALATIN VALLEY WATER DISTRICT compares within OR

OR's 160 covered systems average 6.0 health-based violations each; TUALATIN VALLEY WATER DISTRICT carries 0, not more than typical for the state. 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 TUALATIN VALLEY WATER DISTRICT is from 2001-01-04. Last reported to EPA: 06/26/2026.

What this data is and is not

Everything on this page is TUALATIN VALLEY WATER DISTRICT's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 2 logged violations can see. The guide to what this data misses covers that gap.