Glenham, SD Radon Levels

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.

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

Glenham, SD Radon Facts

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

County Walworth County, SD

Zip Code 57631

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.

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

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