What's in THE DALLES, CITY OF's water?

THE DALLES, CITY OF's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. 13,010 people get their water from it, across 5,408 connections.

Ranked against every other system in this dataset

Out of 12,903 systems in this dataset, THE DALLES, CITY OF ranks 9,833th by violation burden (24th percentile) - 28 violations total, 0 health-baseds.

How THE DALLES, CITY OF compares within OR

THE DALLES, CITY OF's 0 health-based violations sit within the OR average of 6.0, across 160 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 THE DALLES, CITY OF is from 2026-01-01. Last reported to EPA: 06/26/2026.

What this data is and is not

Everything on this page is THE DALLES, CITY OF's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 0 health-based violations on file for THE DALLES, CITY OF - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.