Circle, MT Radon Mitigation and Testing

Q: What EPA Radon Zone is Circle in?

Circle is in McCone County, EPA Zone 1.

Q: How much does radon mitigation cost in Circle?

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

McCone County

EPA Zone 1

Circle sits in the rolling plains of McCone County in eastern Montana, where the underlying Fort Union Formation and glacial deposits create moderate radon potential. With limited testing data available for the 59215 area, homeowners should conduct individual radon measurements to assess their specific risk. The region's typical ranch-style homes and mobile homes may have lower radon accumulation, but basement properties could see elevated levels.

Circle, MT Radon Mitigation

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

Circle, MT Radon Testing

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

Circle Radon Facts

Key details about the radon risk profile for Circle and the 59215 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

McCone County, MT

Zip Code

59215

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Circle and the 59215 zip code are located in McCone 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 Circle, MT

What EPA Radon Zone is Circle in?

Circle and the 59215 zip code are in McCone 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 Circle?

Radon mitigation in Circle 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 Circle?

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