Radon Potential Areas
Fairfax County
Updated Oct 8, 2026
About this dataset
<div style='text-align:Left;'><div><div><p><span><span>Areas of radon potential within Fairfax County. These are 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 (pCi/L) can occur anywhere in the areas shown on the map. </span></span></p><p><span><span>For more information on radon levels, home testing, and related topics, see the</span></span><span><span> </span></span><a href='https://www.fairfaxcounty.gov/health/environment/air/radon' style='text-decoration:underline;' rel='nofollow ugc'><span style='text-decoration:underline;'><span>Fairfax County Health Department's radon website</span></span></a><span><span>.</span></span></p><p><p><span><span>Contact: Fairfax County Department of Information Technology GIS Division</span></span></p><p><span><span>Data Accessibility: Publicly Available</span></span></p><p><span><span>Update Frequency: Never</span></span></p><p><span><span>Last Revision Date: </span></span><span><span>1/1/2000</span></span></p><p><span><span>Creation Date: </span></span><span><span>1/1/2000</span></span></p><p><span><span>Feature Dataset Name: USGSMGR.DATA</span></span></p><p><span><span>Layer Name: USGSMGR.RADON_POTENTIAL_AREAS</span></span></p></div></div></div></p>
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