Butte, MT Radon Levels

Q: What is the average radon level in Butte, MT?

Based on 10 user-submitted tests, the average radon level is 10.20 pCi/L.

Q: What EPA Radon Zone is Butte in?

Butte is in Silver Bow County, EPA Zone 1.

Q: How much does radon mitigation cost in Butte?

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

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

Butte, MT Radon Facts

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

County Silver Bow County, MT

Zip Code 59701

Avg. User Level 10.20 pCi/L

User Tests 10

Situated in southwestern Montana's Silver Bow County, Butte shows an average radon level of 10.2 pCi/L based on local testing data. This concentration significantly exceeds the EPA action threshold, reflecting the region's uranium-rich granite and volcanic bedrock that contribute to elevated radon levels throughout the historic mining area.

10.20

pCi/L average

Above EPA Action Level

Based on 10 user-submitted radon tests for homes in Butte, MT. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Butte, MT Radon Mitigation

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Butte, MT Radon Levels

User-submitted radon test readings from homes in the Butte area.

Radon Level	City	Home Age	Foundation
5 pCi/L	Butte, MT	100+ Years	Partial Basement
19 pCi/L	Butte, MT	21-50 Years	Full Basement
10 pCi/L	Butte, MT	51-99 Years	Full Basement
4 pCi/L	Butte, MT	51-99 Years	—
20 pCi/L	Butte, MT	100+ Years	Partial Basement

Have a radon test result for Butte? Submit your reading to help other homeowners.

Radon FAQ for Butte, MT

What is the average radon level in Butte, MT?

Based on 10 user-submitted tests, the average radon level in Butte is 10.20 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Butte in?

Butte and the 59701 zip code are in Silver Bow 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 Butte?

Radon mitigation in Butte 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 Butte?

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

Butte, MT Radon Levels

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

Butte, MT Radon Facts

Butte, MT Radon Mitigation

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Butte, MT Radon Levels

Radon FAQ for Butte, MT

Most Active Radon Markets in Montana

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