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      Williamsburg, VA Radon Levels

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

      Williamsburg, VA Radon Facts

      EPA Radon Zone Unknown Unknown
      County Williamsburg City County, VA
      Zip Code 23185
      Avg. User Level 5.80 pCi/L
      User Tests 5

      Historic Williamsburg in James City County shows an average radon level of 5.75 pCi/L, exceeding the EPA's 4.0 pCi/L action threshold. The area's Coastal Plain geology, with sandy soils over deeper sedimentary formations, contributes to these elevated readings across the Virginia Beach Metro region. Homes in the 23188 area, particularly those with basements or crawl spaces, should prioritize radon testing and mitigation.

      5.80
      pCi/L average
      Above EPA Action Level

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

      0
      4.0 EPA
      10+

      Williamsburg, VA Radon Mitigation

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

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      Williamsburg, VA Radon Levels

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

      Radon LevelCityHome AgeFoundation
      6 pCi/L Williamsburg, VA 0-20 Years Full Basement
      6 pCi/L Williamsburg, VA 0-20 Years Full Basement
      5 pCi/L Williamsburg, VA 0-20 Years Full Basement

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

      Radon FAQ for Williamsburg, VA

      What is the average radon level in Williamsburg, VA?
      Based on 5 user-submitted tests, the average radon level in Williamsburg is 5.80 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 Williamsburg in?
      Williamsburg and the 23185 zip code are in Williamsburg City County, which has an EPA assigned Radon Zone of Unknown. A zone of Unknown does not have sufficient data for classification.
      How much does radon mitigation cost in Williamsburg?
      Radon mitigation in Williamsburg 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 Williamsburg?
      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 Virginia

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

      CityAvg User Radon LevelSubmissions
      Fredericksburg 7.29 pCi/L 7
      King George 7.17 pCi/L 6
      Leesburg 9.80 pCi/L 5
      Chantilly 9.60 pCi/L 5
      Fancy Gap 9.40 pCi/L 5
      Williamsburg 5.80 pCi/L 5
      Purcellville 10.75 pCi/L 4
      Aldie 8.00 pCi/L 4
      Front Royal 7.75 pCi/L 4
      Bristol 7.50 pCi/L 4

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      Free Radon Mitigation Quote

      Or call for a free quote: 1-800-299-3578 Local: 540-208-2977

      A licensed contractor will contact you immediately.

      * Required