UKIAH, CITY OF: EPA violation history, explained
UKIAH, CITY OF has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 16,607 people through 4,935 service connections.
How this compares nationally
3 total violations and 1 health-based ones put UKIAH, CITY OF at the 30th percentile nationally for violation burden, rank 8,969 of 12,903.
How UKIAH, CITY OF compares within CA
CA's 803 covered systems average 5.8 health-based violations each; UKIAH, CITY OF carries 1, 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 UKIAH, CITY OF is from 2022-01-10 (health-based: 1996-01-02). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
UKIAH, CITY OF'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 this data is and is not
Everything on this page is UKIAH, CITY OF'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 3 logged violations can see. The guide to what this data misses covers that gap.