CWSC OAK HILLS: EPA violation history, explained
CWSC OAK HILLS has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 3,161, over 884 connections.
Ranked against every other system in this dataset
6 total violations and 2 health-based ones put CWSC OAK HILLS at the 47th percentile nationally for violation burden, rank 6,815 of 12,903.
Against the CA average
CA's 803 covered systems average 5.8 health-based violations each; CWSC OAK HILLS carries 2, not more than typical for the state. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
CWSC OAK HILLS's most recent violation on record is dated 2005-01-01, with the most recent health-based one dated 1996-10-04. Last reported to EPA: 06/22/2026.
The concern categories on record
CWSC OAK HILLS'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:
- Synthetic organic chemicals / pesticides / VOCs - flagged from: 1,1-Dichloroethylene
The most severe category on record is synthetic organic chemicals / pesticides / vocs, which points toward a carbon-class filter if you want to address it directly.
What CWSC OAK HILLS's record does not cover
This is what CWSC OAK HILLS 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 - 2 health-based violations on file for CWSC OAK HILLS - 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.