Howard County, TX radon potential

Howard County is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. Nationally, Howard County ranks higher in radon potential than 18% of rated counties (the 18th percentile).

How Howard County compares

Howard County, Texas is home to about 30,833 people across 900.79 square miles. Population density there runs about 34 people per square mile. Within its own EPA zone, Howard County is bigger by population than 54% of the counties that share it. Geologically, Howard County is grouped into EPA Region 6 alongside 502 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

Well clear of both the 1.3 pCi/L national indoor average and EPA's 4 pCi/L action level, Howard County's Zone 3 prediction is the low end of the scale. Low doesn't mean zero: EPA's own data shows homes in Zone 3 counties like Howard County testing above the action level often enough that skipping a test isn't the safe assumption.

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

Howard County'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.