Cobalt, ID Radon Mitigation and Testing

Q: What EPA Radon Zone is Cobalt in?

Cobalt is in Lemhi County, EPA Zone 1.

Q: How much does radon mitigation cost in Cobalt?

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

Lemhi County

EPA Zone 1

High in Idaho's Lemhi County mountains, Cobalt's remote location and granitic geology typically produce lower radon levels than many Idaho communities. However, testing data for zip code 83229 remains sparse due to the area's small population. Mountain communities can still experience elevated radon in certain geological conditions, making individual home testing the most reliable way to assess exposure risk.

Cobalt, ID Radon Mitigation

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

Cobalt, ID Radon Testing

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

Cobalt Radon Facts

Key details about the radon risk profile for Cobalt and the 83229 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Lemhi County, ID

Zip Code

83229

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Cobalt and the 83229 zip code are located in Lemhi 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 Cobalt, ID

What EPA Radon Zone is Cobalt in?

Cobalt and the 83229 zip code are in Lemhi 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 Cobalt?

Radon mitigation in Cobalt 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 Cobalt?

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