Cal American Water Company - Piru, CA Water Quality
Cal American Water Company - Piru: EPA violation history, explained
Cal American Water Company - Piru has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 2,003, over 613 connections.
Cal American Water Company - Piru's record against the rest of the country
Cal American Water Company - Piru has 3 violations on record in total, 1 of them health-based - ranking it 9,061th of 12,903 systems by violation count, the 30th percentile nationally.
How Cal American Water Company - Piru compares within CA
Cal American Water Company - Piru's 1 health-based violations sit within the CA average of 5.8, across 804 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 Cal American Water Company - Piru is from 2021-01-05 (health-based: 2002-01-01). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
Cal American Water Company - Piru'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 Cal American Water Company - Piru 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 Cal American Water Company - Piru's customers' taps is household plumbing, invisible to a system-level record ranked 9,061th of 12,903 by violation count. The guide to what this data misses covers that gap.