Interior, SD Radon Levels

Q: What EPA Radon Zone is Interior in?

Interior is in Jackson County, EPA Zone 2.

Q: How much does radon mitigation cost in Interior?

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

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

Interior, SD Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Jackson County, SD

Zip Code 57750

Remote Jackson County in the South Dakota Badlands encompasses this small community, where Pierre Shale formations create geological conditions highly favorable for radon gas production. Testing data for the 57750 zip code within the Rapid City Metro area remains very limited. South Dakota's high-radon environment means professional testing is essential, as the state consistently ranks among the highest for residential radon exposure.

Interior, 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 Interior, SD

What EPA Radon Zone is Interior in?

Interior and the 57750 zip code are in Jackson County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Interior?

Radon mitigation in Interior 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 Interior?

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