Radon Levels in West Virginia

55 counties — 20 high risk, 29 moderate, 6 low risk

20
29
6
Zone 1 High (36.4%) Zone 2 Moderate (52.7%) Zone 3 Low (10.9%)

West Virginia Radon Zone Map

Counties colored by EPA radon zone. Red = Zone 1, Orange = Zone 2, Green = Zone 3.

Highest-Risk Counties

Berkeley35% above action level
BrookeZone 1 — High
GrantZone 1 — High
GreenbrierZone 1 — High
HampshireZone 1 — High
Hancock80% above action level
HardyZone 1 — High
Jefferson50% above action level
Marshall57.1% above action level
Mercer41.7% above action level
MineralZone 1 — High
Monongalia46.2% above action level
+8 more

Check Your West Virginia ZIP Code

All 55 Counties — By Radon Risk

CountyEPA ZoneTests% Above 4 pCi/L
Berkeley High 20 35%
Brooke High 4 —
Grant High — —
Greenbrier High 7 —
Hampshire High 4 —
Hancock High 5 80%
Hardy High — —
Jefferson High 8 50%
Marshall High 7 57.1%
Mercer High 12 41.7%
Mineral High 4 —
Monongalia High 13 46.2%
Monroe High 4 —
Morgan High 4 —
Ohio High 8 62.5%
Pendleton High — —
Pocahontas High — —
Preston High 7 —
Summers High — —
Wetzel High — —
Barbour Moderate — —
Braxton Moderate — —
Cabell Moderate 19 42.1%
Calhoun Moderate — —
Clay Moderate — —
Doddridge Moderate — —
Fayette Moderate 7 71.4%
Gilmer Moderate — —
Harrison Moderate 12 50%
Jackson Moderate 6 —
Lewis Moderate — —
Lincoln Moderate 5 —
Marion Moderate 10 50%
Mason Moderate 7 —
Nicholas Moderate — —
Pleasants Moderate — —
Putnam Moderate 7 57.1%
Raleigh Moderate 11 72.7%
Randolph Moderate 4 —
Ritchie Moderate — —
Roane Moderate — —
Taylor Moderate — —
Tucker Moderate — —
Tyler Moderate — —
Upshur Moderate 5 —
Wayne Moderate 8 —
Webster Moderate — —
Wirt Moderate — —
Wood Moderate 16 50%
Boone Low 4 —
Kanawha Low 35 45.7%
Logan Low 7 —
McDowell Low 4 —
Mingo Low 4 —
Wyoming Low 4 —

Sources: EPA Map of Radon Zones, CDC Environmental Health Tracking Network

Frequently Asked Questions

How many counties in West Virginia have high radon risk?

West Virginia has 20 counties classified as EPA Zone 1 (high radon risk), 29 as Zone 2 (moderate), and 6 as Zone 3 (low risk).

Is radon a problem in West Virginia?

West Virginia has 20 high-risk counties where elevated radon is likely. The EPA recommends all homes in West Virginia be tested for radon, regardless of which zone they're in.

How do I check radon levels for my West Virginia address?

Enter your ZIP code in the search box above to see your county's EPA radon zone and available testing data. For your specific home's radon level, you'll need a radon test kit.