Refugio County, TX radon potential

EPA places Refugio 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. Nationally, Refugio County ranks higher in radon potential than 4% of rated counties (the 4th percentile).

Refugio County by the numbers

Refugio County, Texas is home to about 6,739 people across 770.484 square miles. That works out to roughly 9 people per square mile. Within its own EPA zone, Refugio County is bigger by population than 12% of the counties that share it. Geologically, Refugio 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, Refugio County's Zone 3 prediction is the low end of the scale. A Zone 3 label describes Refugio County's average, not any one basement or slab in it — testing is still the only way an individual homeowner actually finds out.

If Refugio 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 Refugio County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Refugio County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. RADONZONE-10OFF at checkout knocks 10% off.

Where Refugio County's figures come from

Refugio County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Refugio County carries, the zone explainer covers what it does and doesn't tell you about any one house.