Corvallis, MT Radon Mitigation and Testing

Q: What EPA Radon Zone is Corvallis in?

Corvallis is in Ravalli County, EPA Zone 1.

Q: How much does radon mitigation cost in Corvallis?

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

Ravalli County

EPA Zone 1

Nestled in Ravalli County within Montana's Bitterroot Valley, Corvallis sits between mountain ranges where alluvial deposits and underlying bedrock can create variable radon conditions. Testing data for zip code 59828 remains limited, making professional radon testing important for area residents. The valley's rural housing includes ranch-style homes, log construction, and manufactured housing, each with different radon risk profiles based on foundation design.

Corvallis, MT Radon Mitigation

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

Corvallis, MT Radon Testing

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

Corvallis Radon Facts

Key details about the radon risk profile for Corvallis and the 59828 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Ravalli County, MT

Zip Code

59828

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Corvallis and the 59828 zip code are located in Ravalli 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 Corvallis, MT

What EPA Radon Zone is Corvallis in?

Corvallis and the 59828 zip code are in Ravalli 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 Corvallis?

Radon mitigation in Corvallis 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 Corvallis?

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