Hartley County, TX radon potential

EPA's own radon map rates Hartley County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. That puts Hartley County in the 36th percentile nationally for radon potential — higher than 36% of the counties EPA has rated.

How Hartley County compares

Hartley County, Texas is home to about 4,996 people across 1,461.955 square miles. Population density there runs about 3 people per square mile. Within its own EPA zone, Hartley County is bigger by population than 9% of the counties that share it. EPA's geology-based Region 6 groups Hartley County with 502 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Call it a middle case: above the 1.3 pCi/L most US homes average, below the 4 pCi/L line EPA uses to recommend mitigation — that's Hartley County's Zone 2 prediction. A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Hartley County — testing is the only way to know an individual home's actual level.

If Hartley County tests above the action level

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 Hartley County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Hartley 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 Hartley County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Hartley County's numbers. Whatever zone Hartley County carries, the zone explainer covers what it does and doesn't tell you about any one house.