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Mound City, SD Radon Levels

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


Mound City, SD Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Campbell County, SD
Zip Code 57646

Situated in Campbell County within South Dakota's glacial prairie region, Mound City lies in an EPA Zone 1 area known for elevated radon potential. The community's housing includes both older farmsteads with basements and newer ranch-style construction typical of rural South Dakota. Given the lack of current testing data for zip code 57646 and the area's high-risk designation, local homeowners should conduct professional radon testing to assess their individual exposure levels.

Mound City, 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 Mound City, SD

What EPA Radon Zone is Mound City in?
Mound City and the 57646 zip code are in Campbell 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 Mound City?
Radon mitigation in Mound City 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 Mound City?
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.

CityAvg User Radon LevelSubmissions
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