Avon, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Avon in?

Avon is in Bon Homme County, EPA Zone 1.

Q: How much does radon mitigation cost in Avon?

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

Bon Homme County

EPA Zone 1

Situated in Bon Homme County along the Missouri River valley in southeastern South Dakota, Avon's geological setting of glacial deposits over Pierre shale creates variable radon potential. Testing data remains limited for this rural community in zip code 57315, making professional radon testing essential for homeowners. The area's mix of older farmsteads and newer construction requires individual assessment to determine radon risk.

Avon, SD Radon Mitigation

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

Avon, SD Radon Testing

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

Avon Radon Facts

Key details about the radon risk profile for Avon and the 57315 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Bon Homme County, SD

Zip Code

57315

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avon and the 57315 zip code are located in Bon Homme 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 Avon, SD

What EPA Radon Zone is Avon in?

Avon and the 57315 zip code are in Bon Homme 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 Avon?

Radon mitigation in Avon 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 Avon?

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