Manhattan, MT Radon Levels

Q: What EPA Radon Zone is Manhattan in?

Manhattan is in Gallatin County, EPA Zone 1.

Q: How much does radon mitigation cost in Manhattan?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

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

Manhattan, MT Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Gallatin County, MT

Zip Code 59741

Nestled in the Gallatin Valley within Gallatin County, Manhattan sits among Montana's agricultural heartland where underlying sedimentary rocks and mountain valley geology can influence residential radon levels. This small farming community features predominantly ranch-style homes and older farmsteads, many with partial basements or crawl spaces typical of rural Montana construction. Testing data for the 59741 zip code remains limited, making professional radon measurement advisable for homeowners, particularly those with below-grade living areas.

Manhattan, 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 Manhattan, MT

What EPA Radon Zone is Manhattan in?

Manhattan and the 59741 zip code are in Gallatin 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 Manhattan?

Radon mitigation in Manhattan 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 Manhattan?

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