Columbia, SD Radon Levels

Q: What EPA Radon Zone is Columbia in?

Columbia is in Brown County, EPA Zone 1.

Q: How much does radon mitigation cost in Columbia?

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

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

Columbia, SD Radon Facts

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

County Brown County, SD

Zip Code 57433

Rural Columbia in Brown County sits within South Dakota's glaciated prairie region, where thick glacial till deposits over sedimentary bedrock can influence radon levels throughout zip code 57433. The area's agricultural landscape features widely scattered residential properties with varying foundation types and construction methods. Since local radon testing data isn't available, homeowners should conduct individual testing to establish baseline levels, particularly important given South Dakota's generally elevated radon potential.

Columbia, 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 Columbia, SD

What EPA Radon Zone is Columbia in?

Columbia and the 57433 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 Columbia?

Radon mitigation in Columbia 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 Columbia?

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