San Fernando-City, Water Dept., CA Water Quality
What's in San Fernando-City, Water Dept.'s water?
San Fernando-City, Water Dept. has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 23,946, over 5,400 connections.
How this compares nationally
San Fernando-City, Water Dept. has 1 violation on record in total, 1 of them health-based - ranking it 9,190th of 12,903 systems by violation count, the 29th percentile nationally.
How San Fernando-City, Water Dept. compares within CA
CA's 804 covered systems average 5.8 health-based violations each; San Fernando-City, Water Dept. 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 San Fernando-City, Water Dept. is from 1991-01-10 (health-based: 1991-01-10). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
San Fernando-City, Water Dept.'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
This is what San Fernando-City, Water Dept. reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. Between the utility's meter and San Fernando-City, Water Dept.'s customers' taps is household plumbing, invisible to a system-level record ranked 9,190th of 12,903 by violation count. The guide to what this data misses covers that gap.