Radon Pros in Virginia

Last updated: March 2026

Virginia's radon risk follows the state's topography from west to east. The Shenandoah Valley and Blue Ridge region are EPA Zone 1 — the highest risk classification — driven by Appalachian geology rich in uranium-bearing rock. Northern Virginia, including Fairfax, Loudoun, and Prince William counties, is classified as Zone 2 with moderate risk, though many homes test above the EPA action level of 4.0 pCi/L. Coastal areas including Hampton Roads and the Eastern Shore are Zone 3 with generally lower levels. Virginia does not require state-specific radon licensing beyond national NRPP or NRSB certification, relying instead on a voluntary radon program administered by the Virginia Department of Health. In real estate transactions, radon testing is not mandated by state law but is increasingly common, particularly in Northern Virginia and the Shenandoah Valley where buyer awareness is high. Virginia's radon profile is notable for the sharp risk gradient across a relatively small geographic area — homes in the Blue Ridge foothills may test above 20 pCi/L while properties an hour east in the Piedmont test below 2.0. This variability underscores the EPA recommendation that every Virginia home be tested individually regardless of regional zone classification.