Lewistown, MT Radon Levels
Check local Lewistown radon levels and find certified testing and mitigation professionals to keep your home safe
Lewistown, MT Radon Facts
EPA Radon Zone
Zone 1 — High Risk
> 4.0 pCi/L (Zone 1)
County
Fergus County, MT
Zip Code
59457
Situated in Fergus County in central Montana, Lewistown lies within EPA Zone 1 where elevated radon levels are anticipated across much of the state's geological landscape. The region's sedimentary rock formations and uranium-bearing soils create favorable conditions for radon gas accumulation in homes. With testing data limited for zip code 59457, homeowners should conduct radon tests to understand their specific exposure risk and ensure indoor air quality safety.
Lewistown, MT Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Need Radon Mitigation or Testing in Lewistown?
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Radon FAQ for Lewistown, MT
What EPA Radon Zone is Lewistown in?
Lewistown and the 59457 zip code are in Fergus 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 Lewistown?
Radon mitigation in Lewistown 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 Lewistown?
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.
| City | Avg User Radon Level | Submissions |
|---|---|---|
| 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 |