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      Cincinnati, OH Radon Levels

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

      Cincinnati, OH Radon Facts

      EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
      County Hamilton County, OH
      Zip Code 45202
      Avg. User Level 5.30 pCi/L
      User Tests 4

      Cincinnati spans multiple counties including Hamilton County and Clermont County, where the Ohio River valley's limestone bedrock and glacial deposits create conditions conducive to radon accumulation. Local testing data shows an average radon level of 5.2 pCi/L, which exceeds the EPA action threshold of 4.0 pCi/L. The city's diverse housing stock, from historic neighborhoods with stone foundations to modern suburban developments, requires consistent radon testing and mitigation when levels are elevated.

      5.30
      pCi/L average
      Above EPA Action Level

      Based on 4 user-submitted radon tests for homes in Cincinnati, OH. The EPA recommends taking action at or above 4.0 pCi/L.

      0
      4.0 EPA
      10+

      Cincinnati, OH Radon Mitigation

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

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      Cincinnati, OH Radon Levels

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

      Radon LevelCityHome AgeFoundation
      4 pCi/L Cincinnati, OH 21-50 Years Full Basement
      4 pCi/L Cincinnati, OH 51-99 Years Full Basement
      8 pCi/L Cincinnati, OH 0-20 Years Full Basement
      5 pCi/L Cincinnati, OH 21-50 Years Partial Basement
      5 pCi/L Cincinnati, OH 0-20 Years Full Basement

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

      Radon FAQ for Cincinnati, OH

      What is the average radon level in Cincinnati, OH?
      Based on 4 user-submitted tests, the average radon level in Cincinnati is 5.30 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 Cincinnati in?
      Cincinnati and the 45202 zip code are in Hamilton 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 Cincinnati?
      Radon mitigation in Cincinnati 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 Cincinnati?
      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 Ohio

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

      CityAvg User Radon LevelSubmissions
      Marietta 8.00 pCi/L 5
      Cincinnati 5.20 pCi/L 5
      Hilliard 11.75 pCi/L 4
      Wilmington 5.25 pCi/L 4
      Newark 15.00 pCi/L 3
      Athens 11.33 pCi/L 3
      Findlay 10.33 pCi/L 3
      Perrysburg 9.67 pCi/L 3
      Powell 8.33 pCi/L 3
      Columbus 6.00 pCi/L 3

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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