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Shelton, WA Radon Levels

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


Shelton, WA Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)
County Mason County, WA
Zip Code 98584

Located in Mason County along Puget Sound, Shelton benefits from western Washington's marine sediments and volcanic soils that typically produce lower radon levels. While testing data for the 98584 area is currently limited, the community's EPA Zone 3 classification suggests generally lower radon risk, though individual home testing remains recommended.

Shelton, 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 Shelton, WA

What EPA Radon Zone is Shelton in?
Shelton and the 98584 zip code are in Mason 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 Shelton?
Radon mitigation in Shelton 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 Shelton?
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.

CityAvg User Radon LevelSubmissions
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