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Curlew, WA Radon Levels

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


Curlew, WA Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Ferry County, WA
Zip Code 99118

Remote Ferry County community in northeastern Washington, Curlew currently has limited radon testing data available for zip code 99118. The area's granitic bedrock and mountain valley soils can produce variable radon levels depending on local geological conditions. Rural Washington properties, particularly older homes with basements or crawl spaces, should undergo professional radon evaluation.

Curlew, WA Radon Mitigation

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

Need Radon Mitigation or Testing in Curlew?

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Radon FAQ for Curlew, WA

What EPA Radon Zone is Curlew in?
Curlew and the 99118 zip code are in Ferry County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.
How much does radon mitigation cost in Curlew?
Radon mitigation in Curlew 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 Curlew?
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