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Garryowen, MT Radon Levels

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


Garryowen, MT Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Big Horn County, MT
Zip Code 59031

Positioned in Big Horn County near the historic Little Bighorn Battlefield, Garryowen sits in EPA Zone 1 where elevated radon potential exists across much of Montana. The area's sedimentary geology and rural housing stock, including older ranch homes with varying foundation types, can influence radon accumulation patterns. Testing data for zip code 59031 remains insufficient, making professional radon testing crucial for area residents.

Garryowen, MT Radon Mitigation

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

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Radon FAQ for Garryowen, MT

What EPA Radon Zone is Garryowen in?
Garryowen and the 59031 zip code are in Big Horn 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 Garryowen?
Radon mitigation in Garryowen 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 Garryowen?
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