Andover, SD Radon Levels

Q: What EPA Radon Zone is Andover in?

Andover is in Day County, EPA Zone 1.

Q: How much does radon mitigation cost in Andover?

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

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

Andover, SD Radon Facts

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

County Day County, SD

Zip Code 57422

Positioned in Day County within South Dakota's glacial prairie region, Andover sits atop geological formations known for elevated radon potential statewide. The town's housing stock includes both historic structures and newer construction, many with basements vulnerable to radon entry through foundation materials. With limited local testing data available for zip code 57422, residents should prioritize professional radon measurement to establish baseline levels.

Andover, SD Radon Mitigation

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

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Radon FAQ for Andover, SD

What EPA Radon Zone is Andover in?

Andover and the 57422 zip code are in Day 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 Andover?

Radon mitigation in Andover 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 Andover?

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