Columbia Falls, MT Radon Mitigation and Testing

Q: What is the average radon level in Columbia Falls, MT?

Based on 3 user-submitted tests, the average radon level is 6.00 pCi/L.

Q: What EPA Radon Zone is Columbia Falls in?

Columbia Falls is in Flathead County, EPA Zone 1.

Q: How much does radon mitigation cost in Columbia Falls?

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

Avg: 6.00 pCi/L

Flathead County

EPA Zone 1

3 user tests

Columbia Falls in Flathead County records an average radon level of 6.0 pCi/L, exceeding the EPA action threshold and reflecting Montana's elevated radon potential. The Flathead Valley's glacial deposits over uranium-bearing bedrock create conditions highly favorable for radon production and accumulation. Residents should prioritize radon mitigation systems, particularly in homes with basements or crawl spaces that can trap radon gas.

6.00

pCi/L average

Above EPA Action Level

Based on 3 user-submitted radon tests for homes in Columbia Falls, MT. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Columbia Falls, MT Radon Mitigation

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

Columbia Falls, MT Radon Testing

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

Columbia Falls, Montana Radon Levels

User-submitted radon test readings from homes in the Columbia Falls area.

Radon Level	City	Home Age	Foundation	Submitted
6 pCi/L	Columbia Falls, MT	51-99 Years	No Basement/All Crawl Space	May 2023

Have a radon test result for Columbia Falls? Submit your reading to help other homeowners.

Columbia Falls Radon Facts

Key details about the radon risk profile for Columbia Falls and the 59912 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Flathead County, MT

Zip Code

59912

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

6.00 pCi/L

User Tests Submitted

Columbia Falls and the 59912 zip code are located in Flathead 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 Columbia Falls, MT

What is the average radon level in Columbia Falls, MT?

Based on 3 user-submitted tests, the average radon level in Columbia Falls is 6.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Columbia Falls in?

Columbia Falls and the 59912 zip code are in Flathead 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 Columbia Falls?

Radon mitigation in Columbia Falls 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 Columbia Falls?

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