Florence, SD Radon Levels

Q: What EPA Radon Zone is Florence in?

Florence is in Codington County, EPA Zone 1.

Q: How much does radon mitigation cost in Florence?

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

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

Florence, SD Radon Facts

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

County Codington County, SD

Zip Code 57235

Located in Codington County in northeastern South Dakota, Florence sits within glacial prairie terrain that can vary significantly in radon potential depending on local soil composition. With no current testing data for the 57235 zip code, residents should prioritize radon testing to understand their specific exposure risk.

Florence, SD Radon Mitigation

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

Need Radon Mitigation or Testing in Florence?

100% Free, No-Obligation Quotes
Matches You with State-Licensed Codington County Pros

1-800-299-3578 Toll-free · Mon–Fri 8am–6pm ET

Radon FAQ for Florence, SD

What EPA Radon Zone is Florence in?

Florence and the 57235 zip code are in Codington 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 Florence?

Radon mitigation in Florence 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 Florence?

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