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

Walton 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. Nationally, Walton County ranks higher in radon potential than 60% of rated counties (the 60th percentile).

How Walton County compares

Walton County, Georgia is home to about 109,792 people across 326.82 square miles. That works out to roughly 336 people per square mile. By population, Walton County is the 182nd largest of every county sharing its EPA zone — the 82nd percentile by population within that zone. Geologically, Walton 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 Walton County

Walton County's predicted average falls between EPA's 4 pCi/L action level and the national indoor average of about 1.3 pCi/L (outdoor air runs roughly 0.4 pCi/L). Walton County's Zone 2 rating sits in the middle nationally; EPA's guidance is unchanged by that — test every home regardless of its zone.

Testing and mitigation in Walton County

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

Where Walton 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.