Garrison, MT Radon Mitigation and Testing

Q: What EPA Radon Zone is Garrison in?

Garrison is in Powell County, EPA Zone 1.

Q: How much does radon mitigation cost in Garrison?

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

Powell County

EPA Zone 1

High in Powell County's mountainous terrain of western Montana, Garrison sits in EPA Zone 1 where geological conditions can produce elevated radon concentrations. The area's granite and metamorphic bedrock, combined with older mining-era housing stock, creates potential for radon accumulation in homes. Testing data for zip code 59731 is currently insufficient, making professional radon testing particularly important for residents.

Garrison, MT Radon Mitigation

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

Garrison, MT Radon Testing

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

Garrison Radon Facts

Key details about the radon risk profile for Garrison and the 59731 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Powell County, MT

Zip Code

59731

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Garrison and the 59731 zip code are located in Powell 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 Garrison, MT

What EPA Radon Zone is Garrison in?

Garrison and the 59731 zip code are in Powell 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 Garrison?

Radon mitigation in Garrison 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 Garrison?

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