Philipsburg, MT Radon Mitigation and Testing

Q: What EPA Radon Zone is Philipsburg in?

Philipsburg is in Granite County, EPA Zone 1.

Q: How much does radon mitigation cost in Philipsburg?

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

Granite County

EPA Zone 1

Located in Granite County within Montana's mountainous terrain, Philipsburg sits in an area where granitic bedrock and mining history can influence radon levels. Although comprehensive testing data for ZIP code 59858 is currently limited, the region's geological composition and Montana's variable radon potential make professional assessment important for homeowners. The community's mix of historic mining-era homes and newer construction may demonstrate different radon accumulation characteristics.

Philipsburg, MT Radon Mitigation

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

Philipsburg, MT Radon Testing

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

Philipsburg Radon Facts

Key details about the radon risk profile for Philipsburg and the 59858 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Granite County, MT

Zip Code

59858

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Philipsburg and the 59858 zip code are located in Granite 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 Philipsburg, MT

What EPA Radon Zone is Philipsburg in?

Philipsburg and the 59858 zip code are in Granite 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 Philipsburg?

Radon mitigation in Philipsburg 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 Philipsburg?

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