Scott County, TN radon potential

EPA places Scott County in Zone 3 - Low Potential — a predicted county-wide average indoor radon level below 2 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Scott County sits at the 15th percentile nationally for radon potential — above 15 of every 100 rated counties.

Where Scott County sits nationally

Scott County, Tennessee is home to about 22,517 people across 532.301 square miles. Population density there runs about 42 people per square mile. Within its own EPA zone, Scott County is bigger by population than 45% of the counties that share it. EPA's geology-based Region 4 groups Scott County with 735 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

A Zone 3 county like Scott County is predicted closer to the 0.4 pCi/L typical outdoors than to EPA's 4 pCi/L action level. Don't read Zone 3 as a pass for Scott County — EPA's guidance to test every home makes no exception for counties predicted low.

Testing and mitigation in Scott 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 Tennessee's state radon program

For Scott County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Scott 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 Scott 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. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.