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      Rapid City, SD Radon Levels

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

      Rapid City, SD Radon Facts

      EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
      County Pennington County, SD
      Zip Code 57701
      Avg. User Level 10.50 pCi/L
      User Tests 2

      Rapid City in Pennington County shows an average radon level of 10.5 pCi/L, significantly above the EPA action threshold, with readings ranging from 6.0 to 15.0 pCi/L across zip codes 57701-57703. The Black Hills region's granite and uranium-bearing rock formations create consistently elevated radon potential. Professional mitigation is strongly recommended for homes in this high-radon area.

      10.50
      pCi/L average
      Above EPA Action Level

      Based on 2 user-submitted radon tests for homes in Rapid City, SD. The EPA recommends taking action at or above 4.0 pCi/L.

      0
      4.0 EPA
      10+

      Rapid City, SD Radon Mitigation

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

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      Rapid City, SD Radon Levels

      User-submitted radon test readings from homes in the Rapid City area.

      Radon LevelCityHome AgeFoundation
      6 pCi/L Rapid City, SD 21-50 Years No Basement/All Crawl Space
      15 pCi/L Rapid City, SD 21-50 Years No Basement/All Slab

      Have a radon test result for Rapid City? Submit your reading to help other homeowners.

      Radon FAQ for Rapid City, SD

      What is the average radon level in Rapid City, SD?
      Based on 2 user-submitted tests, the average radon level in Rapid City is 10.50 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.
      What EPA Radon Zone is Rapid City in?
      Rapid City and the 57701 zip code are in Pennington 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 Rapid City?
      Radon mitigation in Rapid City 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 Rapid City?
      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.

      CityAvg User Radon LevelSubmissions
      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

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      Free Radon Mitigation Quote

      Or call for a free quote: 1-800-299-3578

      A licensed contractor will contact you immediately.

      * Required