Bath County, KY: EPA's radon zone, explained

Bath County is mapped as Zone 2 - Moderate Potential by EPA — meaning the county-wide average indoor level is predicted between 2 and 4 pCi/L. Nationally, Bath County ranks higher in radon potential than 42% of rated counties (the 42nd percentile).

How Bath County compares

Bath County, Kentucky is home to about 12,951 people across 277.992 square miles. Population density there runs about 47 people per square mile. By population, Bath County is the 758th largest of every county sharing its EPA zone — the 27th percentile by population within that zone. Bath County falls in EPA Radon Region 4, one of 736 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Bath County

Neither at the 4 pCi/L action level nor down at the roughly 1.3 pCi/L national indoor norm, Bath County's Zone 2 prediction lands in the gap between the two. Bath County's Zone 2 rating sits in the middle nationally; EPA's guidance is unchanged by that — test every home regardless of its zone.

Testing and mitigation in Bath County

For a Bath County homeowner, the order is simple: test first, since a kit costs a small fraction of what mitigation would. Only if the result clears 4 pCi/L does a system — typically $800–$2,500, about $1,200 for a common install — become worth pricing out.

Find Kentucky's state radon program

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

Where Bath County's figures come from

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