What's in CITY OF SANTA ANA's water?
CITY OF SANTA ANA has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 310,539 people get their water from it, across 45,743 connections.
CITY OF SANTA ANA's record against the rest of the country
Out of 12,903 systems in this dataset, CITY OF SANTA ANA ranks 6,623th by violation burden (49th percentile) - 8 violations total, 2 health-baseds.
How CITY OF SANTA ANA compares within CA
CITY OF SANTA ANA's 2 health-based violations sit within the CA average of 5.8, across 803 systems statewide. 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 CITY OF SANTA ANA is from 2021-01-10 (health-based: 1993-01-04). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
CITY OF SANTA ANA'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 CITY OF SANTA ANA's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 2 health-based violations on file for CITY OF SANTA ANA - 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.