Chinook, MT Radon Mitigation and Testing

Q: What EPA Radon Zone is Chinook in?

Chinook is in Blaine County, EPA Zone 1.

Q: How much does radon mitigation cost in Chinook?

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

Blaine County

EPA Zone 1

Positioned in Blaine County along Montana's Hi-Line, Chinook falls within EPA Zone 1 - the highest risk category for radon exposure nationwide. The region's glacial till deposits and underlying sedimentary formations create excellent conditions for radon gas production and migration into homes. Given the extremely limited testing data for zip code 59523, residents should treat radon testing as an urgent priority and be prepared for potentially significant radon levels requiring professional mitigation.

Chinook, MT Radon Mitigation

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

Chinook, MT Radon Testing

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

Chinook Radon Facts

Key details about the radon risk profile for Chinook and the 59523 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Blaine County, MT

Zip Code

59523

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Chinook and the 59523 zip code are located in Blaine 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 Chinook, MT

What EPA Radon Zone is Chinook in?

Chinook and the 59523 zip code are in Blaine 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 Chinook?

Radon mitigation in Chinook 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 Chinook?

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