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Opheim, MT Radon Levels

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


Opheim, MT Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Valley County, MT
Zip Code 59250

Opheim residents in Valley County have limited radon testing data available for zip code 59250. Montana's glacial till deposits over sedimentary bedrock can create conditions favorable for radon accumulation, particularly in basement homes during winter months. Given the EPA Zone 1 designation, testing is strongly recommended for all properties.

Opheim, 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 Opheim, MT

What EPA Radon Zone is Opheim in?
Opheim and the 59250 zip code are in Valley 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 Opheim?
Radon mitigation in Opheim 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 Opheim?
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