What EPA's radon map says about Pierce County

EPA places Pierce 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 that's the 14th percentile for radon potential — Pierce County outranks 14% of every county EPA has rated.

How Pierce County compares

About 20,669 people live in Pierce County, Georgia, spread over 340.464 square miles. Population density there runs about 61 people per square mile. Among counties sharing Pierce County's EPA zone, it outranks 42% of them by population. Geologically, Pierce County is grouped into EPA Region 4 alongside 735 other counties that share its rock and soil setting.

Zone vs. an actual test

Well clear of both the 1.3 pCi/L national indoor average and EPA's 4 pCi/L action level, Pierce County's Zone 3 prediction is the low end of the scale. A Zone 3 rating means Pierce 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 Pierce County

Mitigation cost doesn't depend on Pierce 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

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

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 Pierce County carries, the zone explainer covers what it does and doesn't tell you about any one house.