Oak Harbor, Washington Water Quality Report
Water quality data for 21 water systems serving 27,370 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (1)
52
Jan 1, 2022
Resolved Violations (499)
3A
Aug 1, 2025 — Aug 31, 2025
02
Jul 1, 2025 — Sep 30, 2025
03
Jul 1, 2025 — Sep 30, 2025
03
Jul 1, 2025 — Sep 30, 2025
03
Jul 1, 2025 — Sep 30, 2025
+ 494 more resolved violations
Frequently Asked Questions
Is Oak Harbor tap water safe to drink?
Oak Harbor's water meets all EPA maximum contaminant levels. However, 0 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Oak Harbor tap water?
0 contaminants have been detected in Oak Harbor's water supply across 21 water systems. See the full contaminant table above for details.
How can I improve my water quality in Oak Harbor?
Install a water filter rated for the specific contaminants found in Oak Harbor's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Oak Harbor have any water quality violations?
Yes, Oak Harbor currently has 25 active violations. See the violations section above for details.