Greene County, AL radon potential

Greene 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. That puts Greene County in the 37th percentile nationally for radon potential — higher than 37% of the counties EPA has rated.

Where Greene County sits nationally

Greene County, Alabama is home to about 7,127 people across 647.023 square miles. Averaged across its land area, Greene County runs about 11 people per square mile. Within its own EPA zone, Greene County is bigger by population than 13% of the counties that share it. Geologically, Greene County is grouped into EPA Region 4 alongside 735 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

Neither at the 4 pCi/L action level nor down at the roughly 1.3 pCi/L national indoor norm, Greene County's Zone 2 prediction lands in the gap between the two. Nothing about a Zone 2 label lowers the case for testing in Greene County — EPA recommends it in every zone, moderate included.

Testing and mitigation in Greene County

A short-term test kit is the standard first step and typically costs far less than mitigation itself. If a test comes back at or above 4 pCi/L, a radon mitigation system for a typical home runs roughly $800–$2,500 (around $1,200 for a common single-family install), driven mainly by foundation type, not by county.

Find Alabama's state radon program

For Greene County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Greene 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 Greene County's figures come from

Greene County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.