CLEARLAKE OAKS COUNTY WATER DISTRICT: EPA violation history, explained
CLEARLAKE OAKS COUNTY WATER DISTRICT had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. It serves 2,359 people through 2,161 service connections.
CLEARLAKE OAKS COUNTY WATER DISTRICT's record against the rest of the country
CLEARLAKE OAKS COUNTY WATER DISTRICT has 10 violations on record in total, 4 of thems health-based - ranking it 4,414th of 12,903 systems by violation count, the 66th percentile nationally.
Against the CA average
CLEARLAKE OAKS COUNTY WATER DISTRICT's 4 health-based violations sit within the CA average of 5.8, across 803 systems statewide. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
CLEARLAKE OAKS COUNTY WATER DISTRICT's most recent violation on record is dated 2023-01-10, with the most recent health-based one dated 2023-01-10. Last reported to EPA: 06/22/2026.
The concern categories on record
CLEARLAKE OAKS COUNTY WATER DISTRICT'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: Surface Water Treatment Rule
- Disinfection byproducts - flagged from: TTHM
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 CLEARLAKE OAKS COUNTY WATER DISTRICT's record does not cover
This is what CLEARLAKE OAKS COUNTY WATER DISTRICT 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. This record - 4 health-based violations on file for CLEARLAKE OAKS COUNTY WATER DISTRICT - 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.