What's in YACOLT's water?
YACOLT had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. Population served: 3,034, over 700 connections.
YACOLT's record against the rest of the country
74 total violations and 10 health-based ones put YACOLT at the 85th percentile nationally for violation burden, rank 1,899 of 12,903.
How YACOLT compares within WA
WA's 322 covered systems average 3.7 health-based violations each; YACOLT carries 10, 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 YACOLT is from 2022-02-10 (health-based: 2022-02-10). Last reported to EPA: 06/19/2026.
What kind of problem, specifically
YACOLT'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:
- Lead & copper - flagged from: Lead and Copper Rule
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
The most severe category on record is lead & copper, which points toward a lead-class filter if you want to address it directly.
What this data is and is not
YACOLT'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. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 74 logged violations can see. The guide to what this data misses covers that gap.