Saint Ignatius, MT Radon Mitigation and Testing

Q: What EPA Radon Zone is Saint Ignatius in?

Saint Ignatius is in Lake County, EPA Zone 1.

Q: How much does radon mitigation cost in Saint Ignatius?

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

Lake County

EPA Zone 1

Nestled in the Mission Valley of Lake County, Saint Ignatius sits within EPA Zone 1 indicating high radon potential for the 59865 zip code area. Testing data remains limited for this rural Montana community surrounded by the Mission Mountains and Flathead Reservation lands. The region's glacial lake deposits and mountain geology can create variable radon conditions, making individual home testing essential for accurate exposure assessment.

Saint Ignatius, MT Radon Mitigation

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

Saint Ignatius, MT Radon Testing

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

Saint Ignatius Radon Facts

Key details about the radon risk profile for Saint Ignatius and the 59865 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Lake County, MT

Zip Code

59865

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Saint Ignatius and the 59865 zip code are located in Lake 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 Saint Ignatius, MT

What EPA Radon Zone is Saint Ignatius in?

Saint Ignatius and the 59865 zip code are in Lake 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 Saint Ignatius?

Radon mitigation in Saint Ignatius 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 Saint Ignatius?

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