What's in OCEANSIDE, CITY OF's water?
OCEANSIDE, CITY OF has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 171,483 people through 44,629 service connections.
Ranked against every other system in this dataset
4 total violations and 2 health-based ones put OCEANSIDE, CITY OF at the 46th percentile nationally for violation burden, rank 6,907 of 12,903.
Against the CA average
OCEANSIDE, CITY OF's 2 health-based violations sit within the CA average of 5.8, across 803 systems statewide. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
OCEANSIDE, CITY OF's most recent violation on record is dated 2013-01-10, with the most recent health-based one dated 2005-01-03. Last reported to EPA: 06/22/2026.
The concern categories on record
OCEANSIDE, CITY OF'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: Interim Enhanced Surface Water Treatment Rule; Surface Water Treatment Rule
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 OCEANSIDE, CITY OF's record does not cover
Everything on this page is OCEANSIDE, CITY OF's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 4 logged violations can see. The guide to what this data misses covers that gap.