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      Seneca, SC Radon Levels

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

      Seneca, SC Radon Facts

      EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
      County Oconee County, SC
      Zip Code 29672
      Avg. User Level 10.30 pCi/L
      User Tests 3

      Seneca in Oconee County has recorded an average radon level of 10.33 pCi/L based on three tests, significantly exceeding the EPA action threshold of 4.0 pCi/L. Located in the Blue Ridge foothills where granite bedrock and uranium-bearing minerals create elevated radon potential, the community spans zip codes 29672 and 29678. The area's housing includes both historic downtown structures and newer developments, many with basements that can trap radon gas, making professional testing and mitigation essential for resident safety.

      10.30
      pCi/L average
      Above EPA Action Level

      Based on 3 user-submitted radon tests for homes in Seneca, SC. The EPA recommends taking action at or above 4.0 pCi/L.

      0
      4.0 EPA
      10+

      Seneca, SC Radon Mitigation

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

      Need Radon Mitigation or Testing in Seneca?

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      Seneca, SC Radon Levels

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

      Radon LevelCityHome AgeFoundation
      6 pCi/L Seneca, SC 0-20 Years Full Basement
      5 pCi/L Seneca, SC 0-20 Years Full Basement
      20 pCi/L Seneca, SC 0-20 Years Full Basement

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

      Radon FAQ for Seneca, SC

      What is the average radon level in Seneca, SC?
      Based on 3 user-submitted tests, the average radon level in Seneca is 10.30 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 Seneca in?
      Seneca and the 29672 zip code are in Oconee 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 Seneca?
      Radon mitigation in Seneca 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 Seneca?
      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 Carolina

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

      CityAvg User Radon LevelSubmissions
      Fort Mill 6.00 pCi/L 1
      Greenville 5.00 pCi/L 1

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      Free Radon Mitigation Quote

      Or call for a free quote: 1-800-299-3578 Local: 864-200-2579

      A licensed contractor will contact you immediately.

      * Required