Newton County, TX radon potential

Newton County is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. That puts Newton County in the 8th percentile nationally for radon potential — higher than 8% of the counties EPA has rated.

How Newton County compares

Newton County, Texas is home to about 11,908 people across 933.677 square miles. Population density there runs about 13 people per square mile. Within its own EPA zone, Newton County is bigger by population than 25% of the counties that share it. EPA's geology-based Region 6 groups Newton County with 502 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Well clear of both the 1.3 pCi/L national indoor average and EPA's 4 pCi/L action level, Newton County's Zone 3 prediction is the low end of the scale. A Zone 3 rating means Newton County's county-wide average is predicted low, but EPA is explicit that a meaningful share of homes in low-potential zones still test above the action level — a low zone is not a reason to skip testing.

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

Where Newton County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Newton County's numbers. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.