Radon Information


Radon gas cannot be seen, smelled or tasted, but it may be a health hazard in your home. Long-term exposure to elevated radon levels is estimated to cause thousands of lung cancer deaths each year. Radon Fact Sheet - PDF file.

Small Radon Potential map -Click on Picture to enlarge Radon Potential map
The Radon Potential of Rocks and Soil in Fairfax County, Virginia, Button, James K, et al., 1988. Short-term test results from a study conducted by the Fairfax County Health Department during the winters of 1986-87 and 1987-88 found that radon levels above the U.S. Environmental Protection Agency action level of 4 picoCuries per liter of air can occur anywhere in the areas shown on the map. In the areas of LOW potential (yellow), 14% of the homes tested had radon levels that were a problem. At the other end of the radon range, 56% of the homes tested in the areas of HIGH potential (red) did not have problem radon levels. The large Fairfax County Radon Potential Map (GIF file, 36K) provides a general description of radon within Fairfax County. Use your back button to return to this page.


Virginia Department Of Health Environmental Protection Agency (EPA)

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