Selby, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Selby in?

Selby is in Walworth County, EPA Zone 1.

Q: How much does radon mitigation cost in Selby?

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

Walworth County

EPA Zone 1

Situated in north-central Walworth County, Selby represents a rural prairie community where radon testing information is currently sparse. The area's glacial till deposits over sedimentary bedrock can contribute to elevated radon potential throughout the northern Great Plains region. Residents in zip code 57472 should prioritize testing given South Dakota's elevated radon conditions.

Selby, SD Radon Mitigation

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

Selby, SD Radon Testing

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

Selby Radon Facts

Key details about the radon risk profile for Selby and the 57472 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Walworth County, SD

Zip Code

57472

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Selby and the 57472 zip code are located in Walworth 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 Selby, SD

What EPA Radon Zone is Selby in?

Selby and the 57472 zip code are in Walworth 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 Selby?

Radon mitigation in Selby 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 Selby?

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 South Dakota

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

City	Avg User Radon Level	Submissions
Spearfish	7.75 pCi/L	4
Rapid City	10.50 pCi/L	2
Aberdeen	8.50 pCi/L	2
Sioux Falls	6.00 pCi/L	2
Watertown	6.00 pCi/L	2