What EPA's radon map says about Pickaway County

Pickaway County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Nationally, Pickaway County ranks higher in radon potential than 92% of rated counties (the 92nd percentile).

Where Pickaway County sits nationally

About 62,158 people live in Pickaway County, Ohio, spread over 501.265 square miles. That works out to roughly 124 people per square mile. Among counties sharing Pickaway County's EPA zone, it outranks 75% of them by population. Geologically, Pickaway County is grouped into EPA Region 5 alongside 523 other counties that share its rock and soil setting.

Zone vs. an actual test

Fixing a home becomes an EPA recommendation past 4 pCi/L, and that is precisely the side of the line Pickaway County's Zone 1 prediction lands on, well above the roughly 1.3 pCi/L most US homes average. EPA's guidance doesn't change because of a Zone 1 label: test the house. What changes is the reason to not put it off in Pickaway County specifically.

If Pickaway County tests above the action level

Mitigation cost doesn't depend on Pickaway 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 Ohio's state radon program

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

The methodology guide shows exactly which EPA and Census sources feed Pickaway County's numbers. Whatever zone Pickaway County carries, the zone explainer covers what it does and doesn't tell you about any one house.