Frankfort, SD Radon Levels

Q: What EPA Radon Zone is Frankfort in?

Frankfort is in Spink County, EPA Zone 1.

Q: How much does radon mitigation cost in Frankfort?

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

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

Frankfort, SD Radon Facts

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

County Spink County, SD

Zip Code 57440

Situated in agricultural Spink County within zip code 57440, Frankfort sits atop glacial drift deposits over Pierre Shale formations typical of central South Dakota's prairie landscape. Although comprehensive radon testing data for this farming community remains limited, the underlying geological conditions can produce variable radon levels that warrant individual property assessment. Local homes, predominantly single-family structures with basements built to withstand harsh winters, may accumulate radon differently based on construction era and foundation characteristics.

Frankfort, 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 Frankfort, SD

What EPA Radon Zone is Frankfort in?

Frankfort and the 57440 zip code are in Spink 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 Frankfort?

Radon mitigation in Frankfort 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 Frankfort?

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