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

EPA places Geneva County in Zone 3 - Low Potential — a predicted county-wide average indoor radon level below 2 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. That puts Geneva County in the 17th percentile nationally for radon potential — higher than 17% of the counties EPA has rated.

Where Geneva County sits nationally

Geneva County, Alabama is home to about 27,259 people across 574.485 square miles. Population density there runs about 47 people per square mile. By population, Geneva County is the 515th largest of every county sharing its EPA zone — the 50th percentile by population within that zone. EPA's geology-based Region 4 groups Geneva County with 735 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Geneva County

Geneva County's Zone 3 prediction undercuts the roughly 1.3 pCi/L most US homes average, nowhere near EPA's 4 pCi/L threshold for recommending mitigation. Even at Zone 3, Geneva County homes are not guaranteed a low reading — zone is a county-wide average, and EPA recommends testing every home regardless of zone.

Testing and mitigation in Geneva County

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

Where Geneva 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. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.