Boulder, MT Radon Mitigation and Testing

Q: What EPA Radon Zone is Boulder in?

Boulder is in Jefferson County, EPA Zone 1.

Q: How much does radon mitigation cost in Boulder?

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

Jefferson County

EPA Zone 1

Situated in Jefferson County in southwestern Montana's mining region, Boulder lies in an area where granite intrusions and uranium-bearing rock formations create high radon potential. Testing data for this community in ZIP code 59632 remains limited, making professional radon testing particularly important for area homeowners. Given Montana's geology and Boulder's EPA Zone 1 classification, residents should prioritize radon testing regardless of home age or foundation type.

Boulder, MT Radon Mitigation

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

Boulder, MT Radon Testing

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

Boulder Radon Facts

Key details about the radon risk profile for Boulder and the 59632 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Jefferson County, MT

Zip Code

59632

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Boulder and the 59632 zip code are located in Jefferson 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 Boulder, MT

What EPA Radon Zone is Boulder in?

Boulder and the 59632 zip code are in Jefferson 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 Boulder?

Radon mitigation in Boulder 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 Boulder?

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