Roberts County, TX radon potential

EPA places Roberts 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, Roberts County ranks higher in radon potential than 33% of rated counties (the 33rd percentile).

Where Roberts County sits nationally

Roberts County, Texas is home to about 837 people across 924.058 square miles. Population density there runs about 1 people per square mile. Within its own EPA zone, Roberts County is bigger by population than 1% of the counties that share it. Geologically, Roberts County is grouped into EPA Region 6 alongside 502 other counties that share its rock and soil setting.

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 Roberts County's Zone 2 prediction. Roberts County's Zone 2 rating sits in the middle nationally; EPA's guidance is unchanged by that — test every home regardless of its zone.

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

Where Roberts County's figures come from

Roberts 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.