Caldwell, ID Radon Mitigation and Testing

Q: What EPA Radon Zone is Caldwell in?

Caldwell is in Canyon County, EPA Zone 2.

Q: How much does radon mitigation cost in Caldwell?

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

Canyon County

EPA Zone 2

Part of the greater Boise metropolitan area in Canyon County, Caldwell sits on Snake River Plain sediments that typically show moderate radon potential. The city's mix of agricultural properties and suburban developments spans multiple zip codes including 83605, with varying foundation types and soil conditions. Testing data remains limited, making individual home testing essential for residents to assess their specific radon risk levels.

Caldwell, ID Radon Mitigation

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

Caldwell, ID Radon Testing

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

Caldwell Radon Facts

Key details about the radon risk profile for Caldwell and the 83605 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Canyon County, ID

Zip Code

83605

Predicted Screening Level

2–4 pCi/L (Zone 2)

Caldwell and the 83605 zip code are located in Canyon 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 Caldwell, ID

What EPA Radon Zone is Caldwell in?

Caldwell and the 83605 zip code are in Canyon 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 Caldwell?

Radon mitigation in Caldwell 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 Caldwell?

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