Denton, MT Radon Mitigation and Testing

Q: What EPA Radon Zone is Denton in?

Denton is in Fergus County, EPA Zone 1.

Q: How much does radon mitigation cost in Denton?

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

Fergus County

EPA Zone 1

Located in Fergus County in central Montana, Denton sits within the state's high plains region where varied bedrock geology can produce elevated radon levels in enclosed spaces. With testing data for the 59430 area currently limited, homeowners should conduct professional radon testing, particularly given Montana's reputation for high radon potential statewide.

Denton, MT Radon Mitigation

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

Denton, MT Radon Testing

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

Denton Radon Facts

Key details about the radon risk profile for Denton and the 59430 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Fergus County, MT

Zip Code

59430

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Denton and the 59430 zip code are located in Fergus 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 Denton, MT

What EPA Radon Zone is Denton in?

Denton and the 59430 zip code are in Fergus 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 Denton?

Radon mitigation in Denton 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 Denton?

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