Clinton, WA Radon Levels

Q: What EPA Radon Zone is Clinton in?

Clinton is in Island County, EPA Zone 3.

Q: How much does radon mitigation cost in Clinton?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Check local Clinton radon levels and find certified testing and mitigation professionals to keep your home safe

Clinton, WA Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)

County Island County, WA

Zip Code 98236

Situated on Whidbey Island in Island County, this Pacific Northwest community sits in EPA Zone 3 where lower radon levels are generally expected due to the maritime climate and volcanic geology. Testing data for zip code 98236 remains limited, though the area's glacial deposits over volcanic bedrock typically produce more moderate radon conditions than found in other parts of Washington. Homeowners should still consider periodic testing since individual properties can vary, particularly those built on bluffs or areas with different underlying geology.

Clinton, WA Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Need Radon Mitigation or Testing in Clinton?

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Radon FAQ for Clinton, WA

What EPA Radon Zone is Clinton in?

Clinton and the 98236 zip code are in Island County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

How much does radon mitigation cost in Clinton?

Radon mitigation in Clinton typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Clinton?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in Washington

Cities in Washington with the most user-submitted radon test data, ranked by number of submissions.

City	Avg User Radon Level	Submissions
Vancouver	6.56 pCi/L	9
Kent	3.50 pCi/L	6
Olympia	7.00 pCi/L	5
Seattle	5.25 pCi/L	4
Bellevue	3.75 pCi/L	4
Spokane	11.67 pCi/L	3
Camas	8.00 pCi/L	3
Centralia	7.00 pCi/L	3
Bellingham	4.50 pCi/L	2
Kirkland	4.50 pCi/L	2