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Stevensville, MT Radon Levels

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


Stevensville, MT Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Ravalli County, MT
Zip Code 59870
Avg. User Level 7.70 pCi/L
User Tests 3

Surrounded by the Bitterroot Mountains in Ravalli County, Stevensville has documented radon levels averaging 7.67 pCi/L, significantly exceeding EPA action guidelines. The Bitterroot Valley's alluvial soils over granite bedrock create conditions favorable for radon accumulation in zip code 59870. Mountain valley residents should prioritize radon testing and mitigation, as readings can vary dramatically based on seasonal groundwater changes and soil composition.

7.70
pCi/L average
Above EPA Action Level

Based on 3 user-submitted radon tests for homes in Stevensville, MT. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Stevensville, MT Radon Mitigation

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

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Stevensville, MT Radon Levels

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

Radon LevelCityHome AgeFoundation
5 pCi/L Stevensville, MT 0-20 Years No Basement/All Slab
7 pCi/L Stevensville, MT 0-20 Years Full Basement
11 pCi/L Stevensville, MT 0-20 Years No Basement/All Crawl Space

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

Radon FAQ for Stevensville, MT

What is the average radon level in Stevensville, MT?
Based on 3 user-submitted tests, the average radon level in Stevensville is 7.70 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 Stevensville in?
Stevensville and the 59870 zip code are in Ravalli 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 Stevensville?
Radon mitigation in Stevensville 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 Stevensville?
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 Montana

Cities in Montana with the most user-submitted radon test data, ranked by number of submissions.

CityAvg User Radon LevelSubmissions
Butte 10.20 pCi/L 10
Missoula 6.25 pCi/L 8
Florence 11.67 pCi/L 3
Bozeman 10.33 pCi/L 3
Helena 8.67 pCi/L 3
Stevensville 7.67 pCi/L 3
Sidney 7.33 pCi/L 3
Billings 5.33 pCi/L 3
Miles City 3.33 pCi/L 3
Kalispell 7.50 pCi/L 2