Grangeville, ID Radon Mitigation and Testing

Q: What EPA Radon Zone is Grangeville in?

Grangeville is in Idaho County, EPA Zone 1.

Q: How much does radon mitigation cost in Grangeville?

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

Idaho County

EPA Zone 1

Nestled in the mountains of Idaho County, Grangeville sits within Idaho's EPA Zone 1 high radon potential area where granite bedrock contributes to elevated radon production. Testing data for the 83530 area is currently sparse, making individual home testing crucial for residents. The community's mix of older homes with basements and newer construction on various foundation types creates diverse radon entry scenarios.

Grangeville, ID Radon Mitigation

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

Grangeville, ID Radon Testing

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

Grangeville Radon Facts

Key details about the radon risk profile for Grangeville and the 83530 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Idaho County, ID

Zip Code

83530

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Grangeville and the 83530 zip code are located in Idaho 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 Grangeville, ID

What EPA Radon Zone is Grangeville in?

Grangeville and the 83530 zip code are in Idaho 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 Grangeville?

Radon mitigation in Grangeville 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 Grangeville?

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