Chimacum, WA Radon Mitigation and Testing

Q: What EPA Radon Zone is Chimacum in?

Chimacum is in Jefferson County, EPA Zone 3.

Q: How much does radon mitigation cost in Chimacum?

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

Jefferson County

EPA Zone 3

Nestled in Jefferson County on Washington's Olympic Peninsula, Chimacum's EPA Zone 3 classification suggests generally lower radon potential in this coastal region. The community's location near glacial marine deposits and the unique Pacific Northwest geology creates variable conditions for radon accumulation. With limited current testing data for zip code 98325, residents should still consider radon testing, especially in homes with below-grade living spaces.

Chimacum, WA Radon Mitigation

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

Chimacum, WA Radon Testing

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

Chimacum Radon Facts

Key details about the radon risk profile for Chimacum and the 98325 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Jefferson County, WA

Zip Code

98325

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Chimacum and the 98325 zip code are located in Jefferson 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 Chimacum, WA

What EPA Radon Zone is Chimacum in?

Chimacum and the 98325 zip code are in Jefferson 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 Chimacum?

Radon mitigation in Chimacum 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 Chimacum?

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