Warner, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Warner in?

Warner is in Brown County, EPA Zone 1.

Q: How much does radon mitigation cost in Warner?

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

Positioned in Brown County within South Dakota's northeastern prairie region, Warner experiences the state's highest radon potential due to underlying uranium-bearing shale formations. Although community-specific testing data is currently unavailable, the EPA Zone 1 classification indicates significant radon risk. Homeowners in this glacial till landscape should test immediately, as the geological conditions strongly favor radon gas production and migration.

Warner, SD Radon Mitigation

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

Warner, SD Radon Testing

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

Warner Radon Facts

Key details about the radon risk profile for Warner and the 57479 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Brown County, SD

Zip Code

57479

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Warner and the 57479 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 Warner, SD

What EPA Radon Zone is Warner in?

Warner and the 57479 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 Warner?

Radon mitigation in Warner 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 Warner?

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