Is Tattnall County, GA a radon risk area?

Tattnall County is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. Nationally that's the 15th percentile for radon potential — Tattnall County outranks 15% of every county EPA has rated.

How Tattnall County compares

About 24,275 people live in Tattnall County, Georgia, spread over 480.84 square miles. That works out to roughly 50 people per square mile. Rank 548 by population within its EPA zone puts Tattnall County at the 47th percentile among zone peers. EPA's geology-based Region 4 groups Tattnall County with 735 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Tattnall County

Tattnall 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. A Zone 3 rating means Tattnall 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 Tattnall County

Nothing about Tattnall County's EPA zone changes the mitigation number: $800–$2,500 nationally (around $1,200 typical), set by the house's foundation rather than the county it sits in — and only relevant once a test actually clears 4 pCi/L.

Find Georgia's state radon program

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

More on how this number was built

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. Whatever zone Tattnall County carries, the zone explainer covers what it does and doesn't tell you about any one house.