What's in MOUNTLAKE TERRACE CITY OF's water?

MOUNTLAKE TERRACE CITY OF's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. Population served: 26,402, over 9,290 connections.

Ranked against every other system in this dataset

12 total violations and 0 health-based ones put MOUNTLAKE TERRACE CITY OF at the 20th percentile nationally for violation burden, rank 10,309 of 12,903.

Against the WA average

WA's 322 covered systems average 3.7 health-based violations each; MOUNTLAKE TERRACE CITY OF carries 0, not more than typical for the state. See the lead and copper guide for why lead counts differently.

Most recent violation on record

MOUNTLAKE TERRACE CITY OF's most recent violation on record is dated 2024-01-07. Last reported to EPA: 06/19/2026.

What MOUNTLAKE TERRACE CITY OF's record does not cover

MOUNTLAKE TERRACE CITY OF's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. This record - 0 health-based violations on file for MOUNTLAKE TERRACE 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.