Spencer, ID Radon Levels

Q: What EPA Radon Zone is Spencer in?

Spencer is in Clark County, EPA Zone 1.

Q: How much does radon mitigation cost in Spencer?

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

Check local Spencer radon levels and find certified testing and mitigation professionals to keep your home safe

Spencer, ID Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Clark County, ID

Zip Code 83446

Situated in Clark County in southeastern Idaho's high desert region, Spencer sits atop volcanic and sedimentary formations that can produce variable radon concentrations despite the area's remote location. Testing data for this small railroad community remains limited, making individual property assessment essential for the few year-round residents. The area's sparse housing stock includes historic railroad worker homes and rural residential properties, many with basement foundations that could concentrate radon if present in the local geology.

Spencer, ID Radon Mitigation

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

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Radon FAQ for Spencer, ID

What EPA Radon Zone is Spencer in?

Spencer and the 83446 zip code are in Clark 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 Spencer?

Radon mitigation in Spencer 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 Spencer?

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 in Idaho with the most user-submitted radon test data, ranked by number of submissions.

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