What EPA's radon map says about Crenshaw County

EPA's own radon map rates Crenshaw County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. That puts Crenshaw County in the 9th percentile nationally for radon potential — higher than 9% of the counties EPA has rated.

Where Crenshaw County sits nationally

About 13,114 people live in Crenshaw County, Alabama, spread over 608.865 square miles. That works out to roughly 22 people per square mile. Among counties sharing Crenshaw County's EPA zone, it outranks 27% of them by population. EPA's geology-based Region 4 groups Crenshaw County with 735 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

A Zone 3 county like Crenshaw County is predicted closer to the 0.4 pCi/L typical outdoors than to EPA's 4 pCi/L action level. Even at Zone 3, Crenshaw 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 Crenshaw County

Mitigation cost doesn't depend on Crenshaw County's zone — it depends on the house's foundation. A typical system runs $800–$2,500 (about $1,200 typical), and testing first is what tells you whether that's needed at all.

Find Alabama's state radon program

Crenshaw County's test kit answers today; a Airthings radon monitor keeps answering for Crenshaw County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. RADONZONE-10OFF at checkout knocks 10% off.

More on how this number was built

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