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      Marietta, OH Radon Levels

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

      Marietta, OH Radon Facts

      EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
      County Washington County, OH
      Zip Code 45750
      Avg. User Level 8.00 pCi/L
      User Tests 5

      Nestled in Washington County along the Ohio River valley, Marietta shows an average radon level of 8.0 pCi/L based on local testing—well above the EPA's 4.0 pCi/L action threshold. The area's geology, featuring alluvial deposits over shale and sandstone bedrock, combined with historic homes often built with stone foundations, contributes to elevated readings. Homeowners in this scenic river community should prioritize radon mitigation given these documented elevated levels.

      8.00
      pCi/L average
      Above EPA Action Level

      Based on 5 user-submitted radon tests for homes in Marietta, OH. The EPA recommends taking action at or above 4.0 pCi/L.

      0
      4.0 EPA
      10+

      Marietta, OH Radon Mitigation

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

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      Marietta, OH Radon Levels

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

      Radon LevelCityHome AgeFoundation
      5 pCi/L Marietta, OH 100+ Years Full Basement
      8 pCi/L Marietta, OH 21-50 Years Full Basement
      9 pCi/L Marietta, OH 21-50 Years Full Basement

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

      Radon FAQ for Marietta, OH

      What is the average radon level in Marietta, OH?
      Based on 5 user-submitted tests, the average radon level in Marietta is 8.00 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 Marietta in?
      Marietta and the 45750 zip code are in Washington 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 Marietta?
      Radon mitigation in Marietta 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 Marietta?
      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 Local: 740-251-0996

      A licensed contractor will contact you immediately.

      * Required