Butler County, AL radon potential

Butler County is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. Butler County sits at the 12th percentile nationally for radon potential — above 12 of every 100 rated counties.

Where Butler County sits nationally

Butler County, Alabama is home to about 18,256 people across 776.839 square miles. That works out to roughly 24 people per square mile. Within its own EPA zone, Butler County is bigger by population than 36% of the counties that share it. Geologically, Butler County is grouped into EPA Region 4 alongside 735 other counties that share its rock and soil setting.

What this actually means for a house in Butler County

Butler County's predicted average sits below the national indoor average of about 1.3 pCi/L, well under EPA's 4 pCi/L action level. Don't read Zone 3 as a pass for Butler County — EPA's guidance to test every home makes no exception for counties predicted low.

Testing and mitigation in Butler 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 Butler County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Butler 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 Butler County's figures come from

Butler County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Butler County carries, the zone explainer covers what it does and doesn't tell you about any one house.