Clinton, WA Radon Mitigation and Testing

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.

Island County

EPA Zone 3

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.

Clinton, WA Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Clinton Radon Facts

Key details about the radon risk profile for Clinton and the 98236 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Island County, WA

Zip Code

98236

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

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

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 with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Vancouver	6.56 pCi/L	9
Kent	3.60 pCi/L	5
Seattle	5.25 pCi/L	4
Olympia	5.00 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
Washougal	8.00 pCi/L	1
Ridgefield	5.00 pCi/L	1
Moses Lake	No submissions	0