Missoula, MT Radon Mitigation and Testing

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

Based on 7 user-submitted tests, the average radon level is 6.70 pCi/L.

Q: What EPA Radon Zone is Missoula in?

Missoula is in Missoula County, EPA Zone 1.

Q: How much does radon mitigation cost in Missoula?

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

Avg: 6.70 pCi/L

Missoula County

EPA Zone 1

7 user tests

Missoula is located in Missoula County, Montana. With 7 user-submitted readings averaging 6.70 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 59801 zip code.

6.70

pCi/L average

Above EPA Action Level

Based on 7 user-submitted radon tests for homes in Missoula, MT. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Missoula, MT Radon Mitigation

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

Missoula, MT Radon Testing

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

Missoula, Montana Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
7 pCi/L	Missoula, MT	51-99 Years	Full Basement	Apr 2022
8 pCi/L	Missoula, MT	0-20 Years	No Basement/All Crawl Space	May 2021
6 pCi/L	Missoula, MT	51-99 Years	Partial Basement	Feb 2020
5 pCi/L	Missoula, MT	0-20 Years	Full Basement	Nov 2018
6 pCi/L	Missoula, MT	51-99 Years	Partial Basement	Sep 2018

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

Missoula Radon Facts

Key details about the radon risk profile for Missoula and the 59801 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Missoula County, MT

Zip Code

59801

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

6.70 pCi/L

User Tests Submitted

Missoula and the 59801 zip code are located in Missoula 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 Missoula, MT

What is the average radon level in Missoula, MT?

Based on 7 user-submitted tests, the average radon level in Missoula is 6.70 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 Missoula in?

Missoula and the 59801 zip code are in Missoula 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 Missoula?

Radon mitigation in Missoula 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 Missoula?

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