Tazewell County, VA radon potential

EPA places Tazewell 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, Tazewell County ranks higher in radon potential than 88% of rated counties (the 88th percentile).

How Tazewell County compares

Tazewell County, Virginia is home to about 38,875 people across 518.791 square miles. Population density there runs about 75 people per square mile. Within its own EPA zone, Tazewell County is bigger by population than 64% of the counties that share it. Tazewell County falls in EPA Radon Region 3, one of 245 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Tazewell County

Tazewell County's predicted average sits above EPA's own action level of 4 pCi/L — the concentration at which EPA recommends fixing a home — versus a national average around 1.3 pCi/L indoors and 0.4 pCi/L outdoors. 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 Tazewell County will test well under the action level, and EPA's guidance is to test regardless of zone.

Testing and mitigation in Tazewell 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 Virginia's state radon program

For Tazewell County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Tazewell 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 Tazewell 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 Tazewell County carries, the zone explainer covers what it does and doesn't tell you about any one house.