Grady County, GA: EPA's radon zone, explained

EPA's own radon map rates Grady County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. Nationally, Grady County ranks higher in radon potential than 16% of rated counties (the 16th percentile).

How Grady County compares

Grady County, Georgia is home to about 26,271 people across 454.464 square miles. That works out to roughly 58 people per square mile. By population, Grady County is the 524th largest of every county sharing its EPA zone — the 49th percentile by population within that zone. Geologically, Grady County is grouped into EPA Region 4 alongside 735 other counties that share its rock and soil setting.

Zone vs. an actual test

A Zone 3 county like Grady County is predicted closer to the 0.4 pCi/L typical outdoors than to EPA's 4 pCi/L action level. A Zone 3 label describes Grady County's average, not any one basement or slab in it — testing is still the only way an individual homeowner actually finds out.

Testing and mitigation in Grady County

For a Grady 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 Georgia's state radon program

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

Where Grady 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. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.