What EPA's radon map says about Brooks County

EPA places Brooks County in Zone 3 - Low Potential — a predicted county-wide average indoor radon level below 2 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Nationally, Brooks County ranks higher in radon potential than 11% of rated counties (the 11th percentile).

How Brooks County compares

About 16,344 people live in Brooks County, Georgia, spread over 493.184 square miles. That works out to roughly 33 people per square mile. Among counties sharing Brooks County's EPA zone, it outranks 34% of them by population. EPA's geology-based Region 4 groups Brooks County with 735 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Brooks County

Brooks County's Zone 3 prediction undercuts the roughly 1.3 pCi/L most US homes average, nowhere near EPA's 4 pCi/L threshold for recommending mitigation. A Zone 3 rating means Brooks County's county-wide average is predicted low, but EPA is explicit that a meaningful share of homes in low-potential zones still test above the action level — a low zone is not a reason to skip testing.

Testing and mitigation in Brooks County

Mitigation cost doesn't depend on Brooks 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 Georgia's state radon program

Brooks County's test kit answers today; a Airthings radon monitor keeps answering for Brooks 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

Brooks County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.