CITY OF ANTIOCH: EPA violation history, explained
CITY OF ANTIOCH has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 115,074 people get their water from it, across 33,597 connections.
Ranked against every other system in this dataset
3 total violations and 3 health-based ones put CITY OF ANTIOCH at the 57th percentile nationally for violation burden, rank 5,604 of 12,903.
How CITY OF ANTIOCH compares within CA
CA's 803 covered systems average 5.8 health-based violations each; CITY OF ANTIOCH carries 3, not more than typical for the state. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
The last violation EPA has on record for CITY OF ANTIOCH is from 1997-01-01 (health-based: 1997-01-01). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
CITY OF ANTIOCH'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); Surface Water Treatment Rule
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
CITY OF ANTIOCH'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 3 logged violations can see. The guide to what this data misses covers that gap.