What EPA's radon map says about Warrick County

EPA's own radon map rates Warrick County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Nationally that's the 57th percentile for radon potential — Warrick County outranks 57% of every county EPA has rated.

Warrick County by the numbers

About 66,339 people live in Warrick County, Indiana, spread over 384.63 square miles. That works out to roughly 172 people per square mile. Among counties sharing Warrick County's EPA zone, it outranks 73% of them by population. Warrick County falls in EPA Radon Region 5, one of 524 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Warrick County

Call it a middle case: above the 1.3 pCi/L most US homes average, below the 4 pCi/L line EPA uses to recommend mitigation — that's Warrick County's Zone 2 prediction. Nothing about a Zone 2 label lowers the case for testing in Warrick County — EPA recommends it in every zone, moderate included.

Testing and mitigation in Warrick County

Mitigation cost doesn't depend on Warrick 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 Indiana's state radon program

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

The methodology guide shows exactly which EPA and Census sources feed Warrick County's numbers. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.