Henry, SD Radon Levels

Q: What EPA Radon Zone is Henry in?

Henry is in Codington County, EPA Zone 1.

Q: How much does radon mitigation cost in Henry?

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

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

Henry, SD Radon Facts

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

County Codington County, SD

Zip Code 57243

Henry sits in Codington County in eastern South Dakota, where glacial till deposits and prairie conditions contribute to the region's radon potential. The area's housing stock includes both older farmstead properties and newer residential construction, with many homes featuring basements common in the upper Midwest. Since comprehensive radon data for the 57243 zip code is currently limited, residents should test their homes to assess radon exposure levels.

Henry, 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 Henry, SD

What EPA Radon Zone is Henry in?

Henry and the 57243 zip code are in Codington 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 Henry?

Radon mitigation in Henry 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 Henry?

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