CITY OF PLEASANTON: EPA violation history, explained
CITY OF PLEASANTON has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 76,689, over 22,334 connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, CITY OF PLEASANTON ranks 7,048th by violation burden (45th percentile) - 2 violations total, 2 health-baseds.
Against the CA average
Among the 803 CA systems in this dataset, the average is 5.8 health-based violations - CITY OF PLEASANTON's 2 is at or below that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
CITY OF PLEASANTON's most recent violation on record is dated 1995-01-12, with the most recent health-based one dated 1995-01-12. Last reported to EPA: 06/22/2026.
The concern categories on record
CITY OF PLEASANTON'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 CITY OF PLEASANTON's record does not cover
This is what CITY OF PLEASANTON 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. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 2 logged violations can see. The guide to what this data misses covers that gap.