Yelm, WA Radon Mitigation and Testing

Q: What EPA Radon Zone is Yelm in?

Yelm is in Thurston County, EPA Zone 3.

Q: How much does radon mitigation cost in Yelm?

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

Thurston County

EPA Zone 3

This growing Thurston County community within the Olympia Metro area sits on glacial deposits where radon testing data remains limited but geological conditions warrant homeowner attention. Yelm's position in western Washington's Puget Sound lowland, with its mix of glacial till and underlying sedimentary rock, creates variable radon potential throughout the region. Given the area's rapid residential growth and diverse foundation types, professional radon testing is recommended for all homes in the 98597 zip code area.

Yelm, WA Radon Mitigation

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

Yelm, WA Radon Testing

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

Yelm Radon Facts

Key details about the radon risk profile for Yelm and the 98597 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Thurston County, WA

Zip Code

98597

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Yelm and the 98597 zip code are located in Thurston 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 Yelm, WA

What EPA Radon Zone is Yelm in?

Yelm and the 98597 zip code are in Thurston 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 Yelm?

Radon mitigation in Yelm 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 Yelm?

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