Ashton, ID Radon Mitigation and Testing

Q: What EPA Radon Zone is Ashton in?

Ashton is in Fremont County, EPA Zone 1.

Q: How much does radon mitigation cost in Ashton?

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

Fremont County

EPA Zone 1

Nestled in Fremont County in southeastern Idaho near Yellowstone, this community is designated EPA Zone 1 for high radon potential. Limited testing data is available for the 83420 zip code area, making individual home testing crucial for residents. The region's volcanic geology and high-altitude location can contribute to variable radon conditions that require professional assessment.

Ashton, ID Radon Mitigation

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

Ashton, ID Radon Testing

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

Ashton Radon Facts

Key details about the radon risk profile for Ashton and the 83420 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Fremont County, ID

Zip Code

83420

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Ashton and the 83420 zip code are located in Fremont 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 Ashton, ID

What EPA Radon Zone is Ashton in?

Ashton and the 83420 zip code are in Fremont 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 Ashton?

Radon mitigation in Ashton 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 Ashton?

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 Idaho

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Idaho Falls	7.29 pCi/L	7
Hailey	7.83 pCi/L	6
Post Falls	9.00 pCi/L	5
Coeur D Alene	9.00 pCi/L	4
Moscow	7.75 pCi/L	4
Victor	6.67 pCi/L	3
Driggs	16.00 pCi/L	2
Hayden	8.50 pCi/L	2
Pocatello	8.50 pCi/L	2
Eagle	6.00 pCi/L	1
Boise	No submissions	0
Nampa	No submissions	0
Sandpoint	No submissions	0