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Review government records associated with Oak Harbor, Washington.
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Check your water bill for your utility name and confirm the reporting year. See EPA’s guide to finding your annual water quality report.
Public water-system records for Oak Harbor, WA from EPA SDWIS.
Oak Harbor City of
No active drinking-water issues detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
Purchased or imported water record · Serves 23,767 people
Data from EPA SDWIS
Reviewed: source records as of Q1 2026
EPA UCMR5 — No PFAS detection records shown for these water systems
Open data source: EPA UCMR5DoD PFAS — No investigation records shown for this report
Open data source: DoD PFASEPA ATTAINS records identify assessed water bodies that do not meet water-quality standards for designated uses.
Whidbey Island-Saratoga Passage
Reported: Nov 2026
Health-relevant causes: Pathogens
Affected uses: Ecological, Fishconsumption, Recreation
Data from EPA ATTAINS
NPDES permits regulate pollutant discharges into U.S. waterways. Facilities must report compliance quarterly.
No NPDES-permitted facility records with current violation flags surfaced for this city report.
Reviewed: active/open records as of Q4 2025
Data from EPA ECHO
To investigate water contamination, check the sampling locations, dates and results below. For tap water records, see Drinking water quality above.
Reviewed: source records as of 2026
Review historical EPA air pollution records, including monitoring and facility emissions where available. For current conditions, check local air quality on AirNow.
Island County
Assessment year: 2020
According to EPA, a cancer risk of 20-in-1-million means that for every 1 million people continuously exposed to these air toxics over a 70-year lifetime, an estimated 20 may develop cancer from that exposure. This is in addition to cancer risk from all other causes.
Top modeled source groups
Data from EPA AirToxScreen
No EPA nonattainment designation records shown for this report.
EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.
Anacortes-202 Ave
Annual mean: 0.027 Parts per million
Observation year: 2025
Annual mean: 4.5 Micrograms/cubic meter (LC)
Observation year: 2025
Data from EPA AQS
Reviewed: source records as of Q4 2025
Reviewed: source records as of 2024
EPA records for current, proposed and formerly listed Superfund sites on the National Priorities List (NPL).
Open data source: Search EPA ECHOEPA FRS Registry ID 110071102726
Reported: Nov 2021
Reviewed: source query run Nov 2026
State environmental agencies maintain cleanup site databases that include state Superfund, voluntary cleanup, and brownfield remediation programs. These programs track additional sites beyond those on the federal NPL.
1 site with active cleanup or investigation
31300 STATE ROUTE 20, OAK HARBOR
1.5 miles away · Island County
Reported: Nov 2026
Data from EPA ECHO
Release reports
Reported: Dec 2021
Data from EPA UST Finder
Reviewed: reporting year 2024
Sites regulated by the Mine Safety and Health Administration, including mines, sand and gravel operations, and portable crushers. Status and type are from the MSHA Mine Data Retrieval System. Records with active/intermittent status dates older than 5 years are shown as older records rather than current active sites.
More MSHA records matched the search than this preview shows.
No records shown in this group.
Reviewed: status dates within last 5 years
Data from MSHA
Island County, WA
EPA Radon Zone Map (June 2024 release)
Island County is EPA Radon Zone 3 (low potential). EPA defines Zone 3 counties as having predicted average indoor screening levels below 2 pCi/L.
Radon levels can vary from home to home, so EPA recommends testing the property to know its indoor level.
FEMA flood zones describe mapped flood hazards. Look up a specific address with FEMA.
Coastal Special Flood Hazard Area — 1% annual chance of flooding with additional coastal wave action hazards and base flood elevation.
Results use an earlier stored RMP inventory. Current EPA ECHO location coverage is unverified.
No EPA ECHO RMP facility records with a usable location matched this city report.
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
Island County, WashingtonPop. 86,625
County Health Rankings edition: 2024
Premature Death
Poor or Fair Health
Poor Physical Health Days
Poor Mental Health Days
Adult Smoking
Adult Obesity
Air Pollution - Particulate Matter
Drinking water violation indicator
Diabetes Prevalence
Life Expectancy
| Indicator | County | State | National |
|---|---|---|---|
| Premature Death | 6,236 | 6,333 | 7,972 |
| Poor or Fair Health | 12.6% | 13.8% | 14.2% |
| Poor Physical Health Days | 3.4 | 3.5 | 3.3 |
| Poor Mental Health Days | 5.3 | 5.2 | 4.8 |
| Adult Smoking | 13.0% | 10.8% | 15.0% |
| Adult Obesity | 30.8% | 28.7% | 34.0% |
| Air Pollution - Particulate Matter | 7.3 | 7.1 | 7.3 |
| Drinking water violation indicator | Yes | N/A | N/A |
| Diabetes Prevalence | 7.9% | 7.9% | 9.6% |
| Life Expectancy | 80.8 | 79.4 | 77.6 |
This report does not have PFAS sample results for the candidate water systems in Oak Harbor.
Check with the utility that serves your address for its testing results.
EPA drinking water records on this page list 6 violations for the City of Oak Harbor.
Check your water bill to identify the utility serving your address. Ask that utility about current drinking water advisories.
Nearby EPA monitoring stations provide annual air quality measurements for Oak Harbor.
The monitoring station at Anacortes-202 Ave recorded an annual average of 0.027 Parts per million for ozone in 2025.
The monitoring station at Anacortes-202 Ave recorded an annual average of 4.5 Micrograms/cubic meter (LC) for fine particles (PM2.5) in 2025.
The radon data for Oak Harbor covers Island County. EPA places this area in Zone 3, with a predicted average indoor radon screening level below 2 picocuries per liter.
This city report shows 1 Superfund site: Naval Air Station, Whidbey Island (Seaplane Base).
No brownfield sites were returned for this city report.
The county data for Oak Harbor reports a life expectancy of 80.8 years in Island County, Washington.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for Oak Harbor reports 6,236 years of life lost to deaths before age 75 per 100,000 residents in Island County, Washington. This measure adds up the years lost to early deaths and adjusts for differences in population age.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for Oak Harbor lists fine-particle pollution (PM2.5) at 7.3 micrograms per cubic meter in Island County, Washington.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.