Twiggs County, GA radon potential

EPA places Twiggs 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. Twiggs County sits at the 5th percentile nationally for radon potential — above 5 of every 100 rated counties.

How Twiggs County compares

Twiggs County, Georgia is home to about 7,728 people across 359.26 square miles. That works out to roughly 22 people per square mile. Within its own EPA zone, Twiggs County is bigger by population than 14% of the counties that share it. EPA's geology-based Region 4 groups Twiggs County with 735 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Twiggs 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 label describes Twiggs County's average, not any one basement or slab in it — testing is still the only way an individual homeowner actually finds out.

If Twiggs County tests above the action level

A short-term test kit is the standard first step and typically costs far less than mitigation itself. If a test comes back at or above 4 pCi/L, a radon mitigation system for a typical home runs roughly $800–$2,500 (around $1,200 for a common single-family install), driven mainly by foundation type, not by county.

Find Georgia's state radon program

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

Where Twiggs County's figures come from

Twiggs 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.