West Virginia has 55 counties, with 20 classified as EPA Zone 1 (highest risk). With an average radon level of 8.89 pCi/L, West Virginia state testing data reveals significantly elevated risks across multiple counties. Testing is highly recommended.
West Virginia is the 41st most expansive state in terms of size and the 38th most populous.
West Virginia does have an active radon program, dedicated to educating citizens about the risks associated with the deadly gas. You can find more information on Radon, testing and mitigation at the official page.
Explore radon data organized by metro region, including average levels, hotspot cities, and local mitigation professionals.
Cities with the most user-submitted radon test data, ranked by number of submissions.
| City | Avg User Radon Level | Submissions |
|---|---|---|
| Charles Town | 8.10 pCi/L | 10 |
| Berkeley Springs | 7.70 pCi/L | 10 |
| Martinsburg | 16.00 pCi/L | 8 |
| Harpers Ferry | 6.57 pCi/L | 7 |
| Ridgeley | 9.00 pCi/L | 5 |
| Shepherdstown | 6.25 pCi/L | 4 |
| Kearneysville | 5.50 pCi/L | 2 |
| Ranson | 14.00 pCi/L | 1 |
| Morgantown | 5.00 pCi/L | 1 |
| Charleston | 3.00 pCi/L | 1 |
All 55 West Virginia counties with their EPA radon zone classification and user-submitted average radon levels.
Browse radon data for individual cities across West Virginia. Each city page includes user-submitted radon levels, local contractors, and mitigation resources.