Tualatin Valley Water District, OR Water Quality
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 them 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.