Radon Levels in Oklahoma
Oklahoma is classified as an EPA Zone 2 state with a moderate risk for radon. Average indoor radon levels range from 1 to 4 pCi/L, and approximately 12% of Oklahoma homes test above the EPA action level of 4.0 pCi/L.
Oklahoma Radon Summary
Key Facts About Radon in Oklahoma
- Oklahoma's risk varies significantly by region
- The Ouachita Mountains in southeast Oklahoma have higher levels
- Oklahoma DEQ manages radon information
Oklahoma Testing Requirements & Recommendations
No mandate. Oklahoma DEQ recommends testing all homes.
Standard mitigation methods are effective throughout Oklahoma.
Major Cities in Oklahoma
Radon levels can vary significantly within Oklahoma 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 Oklahoma 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 Oklahoma. 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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