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      Indianapolis, IN Radon Levels

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

      Indianapolis, IN Radon Facts

      EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
      County Marion County, IN
      Zip Code 46201
      Avg. User Level 4.00 pCi/L
      User Tests 2

      Central Indiana's capital city spans multiple counties, with areas in Hamilton County showing an average radon level of 4.0 pCi/L based on recent testing. This reading sits at the EPA action threshold, making radon testing particularly important for residents across the Indianapolis Metro area. The region's glacial till deposits over limestone bedrock, combined with widespread basement construction, create conditions where radon levels can vary significantly between neighborhoods.

      4.00
      pCi/L average
      Above EPA Action Level

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

      0
      4.0 EPA
      10+

      Indianapolis, IN Radon Mitigation

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

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      Indianapolis, IN Radon Levels

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

      Radon LevelCityHome AgeFoundation
      1 pCi/L Indianapolis, IN 51-99 Years No Basement/All Slab
      7 pCi/L Indianapolis , IN 51-99 Years Full Basement

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

      Radon FAQ for Indianapolis, IN

      What is the average radon level in Indianapolis, IN?
      Based on 2 user-submitted tests, the average radon level in Indianapolis is 4.00 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 Indianapolis in?
      Indianapolis and the 46201 zip code are in Marion 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 Indianapolis?
      Radon mitigation in Indianapolis 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 Indianapolis?
      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 Indiana

      Cities in Indiana with the most user-submitted radon test data, ranked by number of submissions.

      CityAvg User Radon LevelSubmissions
      Bloomington 8.14 pCi/L 7
      Kokomo 7.40 pCi/L 5
      Lafayette 15.00 pCi/L 3
      Valparaiso 10.00 pCi/L 3
      Westfield 6.33 pCi/L 3
      Avon 6.00 pCi/L 3
      West Lafayette 10.50 pCi/L 2
      Dyer 9.50 pCi/L 2
      Columbus 7.50 pCi/L 2
      Noblesville 7.00 pCi/L 2

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      Free Radon Mitigation Quote

      Or call for a free quote: 1-800-299-3578 Local: 317-588-3621

      A licensed contractor will contact you immediately.

      * Required