Hardy County, WV radon potential

EPA places Hardy County in Zone 1 - Highest Potential — a predicted county-wide average indoor radon level above 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Nationally, Hardy County ranks higher in radon potential than 78% of rated counties (the 78th percentile).

How Hardy County compares

Hardy County, West Virginia is home to about 14,335 people across 582.315 square miles. That works out to roughly 25 people per square mile. Within its own EPA zone, Hardy County is bigger by population than 36% of the counties that share it. Hardy County falls in EPA Radon Region 3, one of 245 counties nationally EPA assigns to that same geologic province.

Why the zone isn't the answer by itself

Where the national indoor average runs about 1.3 pCi/L, Hardy County's Zone 1 rating puts its predicted county average above EPA's 4 pCi/L action level itself. A Zone 1 rating means testing is worth doing sooner rather than later, but it is still county-wide average, not a reading for any single house — some homes in Hardy County will test well under the action level, and EPA's guidance is to test regardless of zone.

Testing and mitigation in Hardy County

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 West Virginia's state radon program

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

Where Hardy County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Hardy County's numbers. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.