Glenham, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Glenham in?

Glenham is in Walworth County, EPA Zone 1.

Q: How much does radon mitigation cost in Glenham?

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

Remote Walworth County in north-central South Dakota features glacial till deposits over Pierre Shale that contribute to the region's high radon potential. Testing data for Glenham's 57631 area remains limited, though South Dakota's uranium-rich geology and glacial conditions frequently produce elevated radon readings. Rural homeowners should conduct professional testing, especially given the area's typical basement construction and long heating seasons that can concentrate radon indoors.

Glenham, SD Radon Mitigation

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

Glenham, SD Radon Testing

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

Glenham Radon Facts

Key details about the radon risk profile for Glenham and the 57631 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Walworth County, SD

Zip Code

57631

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Glenham and the 57631 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 Glenham, SD

What EPA Radon Zone is Glenham in?

Glenham and the 57631 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 Glenham?

Radon mitigation in Glenham 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 Glenham?

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