Radon Levels in Texas
Texas is classified as an EPA Zone 3 state with a low risk for radon. Average indoor radon levels range from 0.5 to 2.5 pCi/L, and approximately 6% of Texas homes test above the EPA action level of 4.0 pCi/L.
Texas Radon Summary
Key Facts About Radon in Texas
- Most of Texas is low to moderate radon risk
- The Panhandle and west Texas have slightly elevated levels
- Texas Commission on Environmental Quality provides radon information
- Large slab-on-grade housing stock limits basement radon in most TX homes
Texas Testing Requirements & Recommendations
No mandate. TCEQ recommends testing for all TX homes.
Radon mitigation in Texas typically addresses crawl spaces rather than basements.
Major Cities in Texas
Radon levels can vary significantly within Texas depending on local geology. All residents — regardless of city — should test their specific home, as neighborhood-level radon varies independently of broader state and county averages.
What Should Texas Residents Do?
Test Your Home
Use a short-term charcoal test kit ($15–$25) for an initial reading, or a continuous radon detector for ongoing monitoring. Test in your basement or lowest livable area.
Understand Your Result
If your result is below 2.0 pCi/L: monitor periodically. Between 2.0–4.0 pCi/L: consider mitigation. Above 4.0 pCi/L: the EPA recommends mitigation. Above 8.0 pCi/L: take action promptly.
Hire a Certified Contractor if Needed
Look for NRPP or NRSB-certified radon mitigation contractors in Texas. Mitigation systems typically cost $800–$2,500 and can reduce radon levels by 50–99%.
Verify with a Follow-Up Test
After mitigation, test again to confirm the system is working. Retest every 2 years, or after significant home renovations.
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