Shelby, MT Radon Mitigation and Testing

Q: What EPA Radon Zone is Shelby in?

Shelby is in Toole County, EPA Zone 1.

Q: How much does radon mitigation cost in Shelby?

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

Toole County

EPA Zone 1

Located in Toole County near the Canadian border, Shelby sits in Montana's northern prairie region where glacial deposits over sedimentary bedrock can influence radon levels. Testing data for this community in zip code 59474 remains limited, making individual home testing essential for residents. Local housing typically features ranch-style construction and varied foundation types that may affect radon accumulation patterns.

Shelby, MT Radon Mitigation

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

Shelby, MT Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Shelby Radon Facts

Key details about the radon risk profile for Shelby and the 59474 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Toole County, MT

Zip Code

59474

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Shelby and the 59474 zip code are located in Toole County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Shelby, MT

What EPA Radon Zone is Shelby in?

Shelby and the 59474 zip code are in Toole 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 Shelby?

Radon mitigation in Shelby 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 Shelby?

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 with the most user-submitted radon test data in the state.

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
Great Falls	4.50 pCi/L	2
Whitefish	4.00 pCi/L	2
Ennis	9.00 pCi/L	1
Livingston	No submissions	0