Big Arm, MT Radon Mitigation and Testing

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

Based on 1 user-submitted tests, the average radon level is 6.00 pCi/L.

Q: What EPA Radon Zone is Big Arm in?

Big Arm is in Lake County, EPA Zone 1.

Q: How much does radon mitigation cost in Big Arm?

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

Lake County

EPA Zone 1

1 user test

Scenic Big Arm along Flathead Lake in Lake County recorded an average radon level of 6.0 pCi/L, exceeding the EPA action threshold and reflecting Montana's high radon potential. This mountainous region's glacial deposits and underlying bedrock create conditions favorable for radon gas production and accumulation. The area's recreational properties and seasonal homes should all undergo testing given the elevated geological risk throughout northwestern Montana.

6.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in Big Arm, MT. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Big Arm, MT Radon Mitigation

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

Big Arm, MT Radon Testing

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

Big Arm, Montana Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
6 pCi/L	Big Arm, MT	21-50 Years	Partial Basement	Sep 2016

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

Big Arm Radon Facts

Key details about the radon risk profile for Big Arm and the 59910 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Lake County, MT

Zip Code

59910

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

6.00 pCi/L

User Tests Submitted

Big Arm and the 59910 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 Big Arm, MT

What is the average radon level in Big Arm, MT?

Based on 1 user-submitted test, the average radon level in Big Arm 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 Big Arm in?

Big Arm and the 59910 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 Big Arm?

Radon mitigation in Big Arm 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 Big Arm?

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