Bath, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Bath in?

Bath is in Brown County, EPA Zone 1.

Q: How much does radon mitigation cost in Bath?

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

Situated in Brown County in northeastern South Dakota, Bath lies within EPA Zone 1 where glacial till deposits over sedimentary bedrock create conditions favorable for radon accumulation. Testing data for this rural community remains limited, making professional radon testing essential for homeowners to understand their specific risk levels. The agricultural character of zip code 57427 includes a mix of older farmsteads and newer construction, both of which can experience elevated radon depending on soil conditions and foundation types.

Bath, SD Radon Mitigation

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

Bath, SD Radon Testing

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

Bath Radon Facts

Key details about the radon risk profile for Bath and the 57427 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Brown County, SD

Zip Code

57427

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Bath and the 57427 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 Bath, SD

What EPA Radon Zone is Bath in?

Bath and the 57427 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 Bath?

Radon mitigation in Bath 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 Bath?

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