Radon gas cannot be seen, smelled or tasted, but it may be a health hazard in your home.

Exposure to radon may cause as many as 21,000 cases of lung cancer each year in the United States, including almost 700 cases per year in Virginia. Testing your home, workplace or other normally occupied area is the only way to know for sure if an indoor radon problem exists.

More Resources from VDH

Radon Potential Map

Small Radon Potential map -Click on Picture to enlarge 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 provides a general description of radon within Fairfax County.

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