Nine Mile Falls, WA Radon Levels

Q: What is the average radon level in Nine Mile Falls, WA?

Based on 1 user-submitted tests, the average radon level is 4.00 pCi/L.

Q: What EPA Radon Zone is Nine Mile Falls in?

Nine Mile Falls is in Stevens County, EPA Zone 1.

Q: How much does radon mitigation cost in Nine Mile Falls?

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

Check local Nine Mile Falls radon levels and find certified testing and mitigation professionals to keep your home safe

Nine Mile Falls, WA Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Stevens County, WA

Zip Code 99026

Avg. User Level 4.00 pCi/L

User Tests 1

Part of the greater Spokane metropolitan area in Stevens County, Nine Mile Falls recorded an average radon level of 4.0 pCi/L based on initial testing. This reading meets the EPA action threshold, indicating that homes in zip code 99026 should prioritize radon testing and mitigation where necessary. The area's volcanic bedrock and varied soil conditions can create localized radon variations throughout the community.

4.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Nine Mile Falls, WA Radon Mitigation

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Nine Mile Falls, WA Radon Levels

User-submitted radon test readings from homes in the Nine Mile Falls area.

Radon Level	City	Home Age	Foundation
4 pCi/L	Nine Mile Falls, WA	21-50 Years	Full Basement

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Radon FAQ for Nine Mile Falls, WA

What is the average radon level in Nine Mile Falls, WA?

Based on 1 user-submitted test, the average radon level in Nine Mile Falls is 4.00 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 Nine Mile Falls in?

Nine Mile Falls and the 99026 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 Nine Mile Falls?

Radon mitigation in Nine Mile Falls 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 Nine Mile Falls?

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

Nine Mile Falls, WA Radon Levels

Check local Nine Mile Falls radon levels and find certified testing and mitigation professionals to keep your home safe

Nine Mile Falls, WA Radon Facts

Nine Mile Falls, WA Radon Mitigation

Need Radon Mitigation or Testing in Nine Mile Falls?

Nine Mile Falls, WA Radon Levels

Radon FAQ for Nine Mile Falls, WA

Most Active Radon Markets in Washington

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