SUMAS WATER DEPT: EPA violation history, explained

SUMAS WATER DEPT has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 2,157 people get their water from it, across 875 connections.

Ranked against every other system in this dataset

38 total violations and 5 health-based ones put SUMAS WATER DEPT at the 73th percentile nationally for violation burden, rank 3,478 of 12,903.

Against the WA average

WA's 322 covered systems average 3.7 health-based violations each; SUMAS WATER DEPT carries 5, more than typical for the state. The filter guide explains what a violation like this actually calls for.

Most recent violation on record

SUMAS WATER DEPT's most recent violation on record is dated 2013-01-07, with the most recent health-based one dated 2006-01-08. Last reported to EPA: 06/19/2026.

The concern categories on record

SUMAS WATER DEPT'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 SUMAS WATER DEPT's record does not cover

Everything on this page is SUMAS WATER DEPT'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 38 logged violations can see. The guide to what this data misses covers that gap.