Norris, MT Radon Mitigation and Testing

Q: What EPA Radon Zone is Norris in?

Norris is in Madison County, EPA Zone 1.

Q: How much does radon mitigation cost in Norris?

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

Madison County

EPA Zone 1

Located in southwestern Montana's Madison County, Norris sits in EPA Zone 1 where uranium-bearing granite and volcanic rocks in the greater Yellowstone region create high radon potential. Testing data for zip code 59745 is limited, making individual home testing crucial in this geologically active area where radon levels often exceed EPA recommendations.

Norris, MT Radon Mitigation

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

Norris, MT Radon Testing

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

Norris Radon Facts

Key details about the radon risk profile for Norris and the 59745 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Madison County, MT

Zip Code

59745

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Norris and the 59745 zip code are located in Madison 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 Norris, MT

What EPA Radon Zone is Norris in?

Norris and the 59745 zip code are in Madison 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 Norris?

Radon mitigation in Norris 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 Norris?

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