Jeff Davis County, TX radon potential

EPA places Jeff Davis County in Zone 2 - Moderate Potential — a predicted county-wide average indoor radon level between 2 and 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Nationally that's the 34th percentile for radon potential — Jeff Davis County outranks 34% of every county EPA has rated.

Where Jeff Davis County sits nationally

Jeff Davis County, Texas is home to about 1,778 people across 2,264.556 square miles. That works out to roughly 1 people per square mile. Within its own EPA zone, Jeff Davis County is bigger by population than 2% of the counties that share it. Geologically, Jeff Davis County is grouped into EPA Region 6 alongside 502 other counties that share its rock and soil setting.

What this actually means for a house in Jeff Davis County

Jeff Davis County's predicted average falls between EPA's 4 pCi/L action level and the national indoor average of about 1.3 pCi/L (outdoor air runs roughly 0.4 pCi/L). Jeff Davis 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 Jeff Davis 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 Texas's state radon program

For Jeff Davis County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Jeff Davis 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 Jeff Davis 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. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.