Henry, SD Radon Mitigation and Testing

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.

Codington County

EPA Zone 1

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.

Henry, SD Radon Testing

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

Henry Radon Facts

Key details about the radon risk profile for Henry and the 57243 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Codington County, SD

Zip Code

57243

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Henry and the 57243 zip code are located in Codington 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 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 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