Frederick, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Frederick in?

Frederick is in Brown County, EPA Zone 1.

Q: How much does radon mitigation cost in Frederick?

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

Brown County

EPA Zone 1

Nestled in Brown County within the glaciated prairie landscape of northeastern South Dakota, Frederick lies in an area where glacial till deposits can influence radon levels. The community's rural character features homes with varying foundation types, from full basements to slab-on-grade construction. Without extensive local testing data available, homeowners should prioritize independent radon testing to determine their individual exposure risk.

Frederick, SD Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Frederick, SD Radon Testing

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

Frederick Radon Facts

Key details about the radon risk profile for Frederick and the 57441 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Brown County, SD

Zip Code

57441

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Frederick and the 57441 zip code are located in Brown 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 Frederick, SD

What EPA Radon Zone is Frederick in?

Frederick and the 57441 zip code are in Brown 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 Frederick?

Radon mitigation in Frederick 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 Frederick?

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