County radon rundown
Radon in Williamsburg city, VA
EPA ZONE–
No EPA zone listedEPA's county zone map doesn't list a zone for Williamsburg city (Virginia's independent cities aren't rated separately). That doesn't mean radon is low here. EPA recommends testing every home.
Source: EPA radon zones spreadsheet
Test your home
A county zone can't tell you what's in your house. Neighbors can have very different readings, so testing is the only way to know.
Short-term test kitCharcoal kit, 2 to 7 days in your lowest lived-in room, then mailed to a lab.
[affiliate slot: test kit]
[affiliate slot: test kit]
Long-term test kit90+ days, a better picture of your year-round average.
[affiliate slot: long-term kit]
[affiliate slot: long-term kit]
Digital radon monitorPlug-in or battery monitor that shows levels continuously.
[affiliate slot: monitor, e.g. Airthings]
[affiliate slot: monitor, e.g. Airthings]
What to do with your result
- Below 2 pCi/L: retest every couple of years or after renovations.
- 2 to 4 pCi/L: EPA says consider fixing your home.
- 4 pCi/L or higher: EPA recommends fixing your home. Confirm with a second test, then contact a certified radon mitigation professional. A typical fix is a sub-slab vent fan system.
- On a private well? Consider testing your well water for radon too.
Source: EPA A Citizen's Guide to Radon.
Radon in the news
Virginia stories
- Radon Risk Maps for VirginiaVirginia Department of Health (.gov) · 2026-10-09
- Radon gas in your home: Some Virginia counties are at elevated risk of having dangerous levelsWTVR.com · 2026-01-07
- High levels of radon found in 25% of Virginia homes, new report findsWRIC ABC 8News · 2025-01-02
Headlines link to the original publishers via Google News. Updated 2026-10-27.
Nearby counties
- James City County Zone 3
- Gloucester County Zone 3
- Surry County Zone 3
- Newport News city