Big Timber, MT Radon Mitigation and Testing

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

Based on 2 user-submitted tests, the average radon level is 8.50 pCi/L.

Q: What EPA Radon Zone is Big Timber in?

Big Timber is in Sweet Grass County, EPA Zone 2.

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

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

Avg: 8.50 pCi/L

Sweet Grass County

EPA Zone 2

2 user tests

Situated in Sweet Grass County along the Yellowstone River valley, Big Timber has recorded an average radon level of 8.5 pCi/L based on recent testing. This reading significantly exceeds the EPA action level of 4.0 pCi/L, reflecting the area's complex geology of Tertiary volcanics over sedimentary bedrock. Homeowners in zip code 59011 should prioritize radon testing and mitigation, especially in homes with basements or crawl spaces.

8.50

pCi/L average

Above EPA Action Level

Based on 2 user-submitted radon tests for homes in Big Timber, MT. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Big Timber, MT Radon Mitigation

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

Big Timber, MT Radon Testing

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

Big Timber, Montana Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
8 pCi/L	Big Timber, MT	0-20 Years	No Basement/All Slab	Sep 2024
9 pCi/L	Big Timber, MT	51-99 Years	Partial Basement	Mar 2024

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

Big Timber Radon Facts

Key details about the radon risk profile for Big Timber and the 59011 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Sweet Grass County, MT

Zip Code

59011

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

8.50 pCi/L

User Tests Submitted

Big Timber and the 59011 zip code are located in Sweet Grass County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Big Timber, MT

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

Based on 2 user-submitted tests, the average radon level in Big Timber is 8.50 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 Timber in?

Big Timber and the 59011 zip code are in Sweet Grass County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Big Timber?

Radon mitigation in Big Timber 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 Timber?

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