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Colville, WA Radon Levels

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


Colville, WA Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Stevens County, WA
Zip Code 99114
Avg. User Level 5.00 pCi/L
User Tests 1

Testing data from Stevens County shows radon levels of 5.0 pCi/L, exceeding EPA action guidelines in this northeastern Washington community. Located within the Spokane Metro area, the region's granite and metamorphic bedrock contribute to elevated radon potential in zip code 99114. Homeowners should consider professional mitigation, particularly in properties with basements or lower-level living areas.

5.00
pCi/L average
Above EPA Action Level

Based on 1 user-submitted radon test for homes in Colville, WA. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Colville, WA Radon Mitigation

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

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Colville, WA Radon Levels

User-submitted radon test readings from homes in the Colville area.

Radon LevelCityHome AgeFoundation
5 pCi/L Colville, WA 51-99 Years Partial Basement

Have a radon test result for Colville? Submit your reading to help other homeowners.

Radon FAQ for Colville, WA

What is the average radon level in Colville, WA?
Based on 1 user-submitted test, the average radon level in Colville is 5.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.
What EPA Radon Zone is Colville in?
Colville and the 99114 zip code are in Stevens 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 Colville?
Radon mitigation in Colville 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 Colville?
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