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      Chantilly, VA Radon Levels

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

      Chantilly, VA Radon Facts

      EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
      County Fairfax County, VA
      Zip Code 20151
      Avg. User Level 9.60 pCi/L
      User Tests 5

      Situated in Fairfax County within the Washington Metro area, Chantilly has recorded an average radon level of 9.6 pCi/L, significantly exceeding the EPA action threshold. Built primarily on Piedmont crystalline bedrock with dense suburban development since the 1960s, homes in the 20151 zip code frequently feature full basements where radon can accumulate. Professional mitigation is strongly recommended for properties showing elevated readings.

      9.60
      pCi/L average
      Above EPA Action Level

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

      0
      4.0 EPA
      10+

      Chantilly, VA 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 Chantilly?

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      Chantilly, VA Radon Levels

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

      Radon LevelCityHome AgeFoundation
      2 pCi/L Chantilly, VA 21-50 Years Partial Basement
      10 pCi/L Chantilly, VA 0-20 Years Full Basement
      4 pCi/L Chantilly, VA 0-20 Years Full Basement
      13 pCi/L Chantilly, VA 0-20 Years Full Basement
      19 pCi/L Chantilly, VA 0-20 Years Full Basement

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

      Radon FAQ for Chantilly, VA

      What is the average radon level in Chantilly, VA?
      Based on 5 user-submitted tests, the average radon level in Chantilly is 9.60 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 Chantilly in?
      Chantilly and the 20151 zip code are in Fairfax 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 Chantilly?
      Radon mitigation in Chantilly 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 Chantilly?
      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: 703-259-8570

      A licensed contractor will contact you immediately.

      * Required