Fayette County, WV: EPA's radon zone, explained

Fayette County is mapped as Zone 2 - Moderate Potential by EPA — meaning the county-wide average indoor level is predicted between 2 and 4 pCi/L. Rank it against the rest of the country and Fayette County lands in the 53rd percentile for radon potential.

How Fayette County compares

Fayette County, West Virginia is home to about 38,600 people across 661.957 square miles. Averaged across its land area, Fayette County runs about 58 people per square mile. By population, Fayette County is the 409th largest of every county sharing its EPA zone — the 60th percentile by population within that zone. EPA's geology-based Region 3 groups Fayette County with 244 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Call it a middle case: above the 1.3 pCi/L most US homes average, below the 4 pCi/L line EPA uses to recommend mitigation — that's Fayette County's Zone 2 prediction. A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Fayette County — testing is the only way to know an individual home's actual level.

If Fayette County tests above the action level

For a Fayette County homeowner, the order is simple: test first, since a kit costs a small fraction of what mitigation would. Only if the result clears 4 pCi/L does a system — typically $800–$2,500, about $1,200 for a common install — become worth pricing out.

Find West Virginia's state radon program

For Fayette County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Fayette County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. Code RADONZONE-10OFF takes 10% off at checkout.

Where Fayette County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Fayette County's numbers. Whatever zone Fayette County carries, the zone explainer covers what it does and doesn't tell you about any one house.