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Big Arm, MT Radon Levels

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


Big Arm, MT Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Lake County, MT
Zip Code 59910
Avg. User Level 6.00 pCi/L
User Tests 1

Scenic Big Arm along Flathead Lake in Lake County recorded an average radon level of 6.0 pCi/L, exceeding the EPA action threshold and reflecting Montana's high radon potential. This mountainous region's glacial deposits and underlying bedrock create conditions favorable for radon gas production and accumulation. The area's recreational properties and seasonal homes should all undergo testing given the elevated geological risk throughout northwestern Montana.

6.00
pCi/L average
Above EPA Action Level

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

0
4.0 EPA
10+

Big Arm, MT Radon Mitigation

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Big Arm, MT Radon Levels

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

Radon LevelCityHome AgeFoundation
6 pCi/L Big Arm, MT 21-50 Years Partial Basement

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

Radon FAQ for Big Arm, MT

What is the average radon level in Big Arm, MT?
Based on 1 user-submitted test, the average radon level in Big Arm is 6.00 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 Big Arm in?
Big Arm and the 59910 zip code are in Lake 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 Big Arm?
Radon mitigation in Big Arm 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 Big Arm?
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