Waynesboro city, VA: EPA's radon zone, explained

EPA's own radon map rates Waynesboro city zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Nationally that's the 83rd percentile for radon potential — Waynesboro city outranks 83% of every county EPA has rated.

Where Waynesboro city sits nationally

Waynesboro city, Virginia is home to about 23,498 people across 14.97 square miles. Averaged across its land area, Waynesboro city runs about 1,570 people per square mile. By population, Waynesboro city is the 529th largest of every county sharing its EPA zone — the 50th percentile by population within that zone.

Zone vs. an actual test

Waynesboro city'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. 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 Waynesboro city specifically.

If Waynesboro city tests above the action level

For a Waynesboro city 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 Virginia's state radon program

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

Where Waynesboro city's figures come from

Waynesboro city's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.