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

EPA places Fayette County in Zone 2 - Moderate Potential — a predicted county-wide average indoor radon level between 2 and 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Nationally that's the 44th percentile for radon potential — Fayette County outranks 44% of every county EPA has rated.

How Fayette County compares

Fayette County, Alabama is home to about 15,863 people across 627.684 square miles. Population density there runs about 25 people per square mile. By population, Fayette County is the 697th largest of every county sharing its EPA zone — the 32nd percentile by population within that zone. Fayette County falls in EPA Radon Region 4, one of 736 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Fayette County

Fayette County's Zone 2 prediction clears the 1.3 pCi/L national indoor average without reaching EPA's own 4 pCi/L point for recommending a fix. A county-wide moderate average, like Fayette County's, can still hide a specific house well above or below it — testing is what actually answers the question.

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 Alabama'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. RADONZONE-10OFF at checkout knocks 10% off.

Where Fayette County's figures come from

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. Whatever zone Fayette County carries, the zone explainer covers what it does and doesn't tell you about any one house.