What's in OAK HARBOR CITY OF's water?
OAK HARBOR CITY OF has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 23,675, over 8,886 connections.
OAK HARBOR CITY OF's record against the rest of the country
Out of 12,903 systems in this dataset, OAK HARBOR CITY OF ranks 6,396th by violation burden (50th percentile) - 13 violations total, 2 health-baseds.
How OAK HARBOR CITY OF compares within WA
WA's 322 covered systems average 3.7 health-based violations each; OAK HARBOR CITY OF carries 2, not more than typical for the state. 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 OAK HARBOR CITY OF is from 2024-01-01 (health-based: 1994-01-02). Last reported to EPA: 06/19/2026.
What kind of problem, specifically
OAK HARBOR 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: Coliform (TCR)
- Other regulated metals - flagged from: Fluoride
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
OAK HARBOR CITY OF's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. This record - 2 health-based violations on file for OAK HARBOR CITY OF - 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.