Yelm, WA Radon Levels

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.

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

Yelm, WA Radon Facts

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

County Thurston County, WA

Zip Code 98597

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.

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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 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