Radon Levels in Arkansas
Arkansas is classified as an EPA Zone 3 state with a low risk for radon. Average indoor radon levels range from 0.4 to 2 pCi/L, and approximately 5% of Arkansas homes test above the EPA action level of 4.0 pCi/L.
Arkansas Radon Summary
Key Facts About Radon in Arkansas
- Predominantly low-risk EPA Zone 3
- Ozark region in northwest may have elevated levels
- Still advisable to test — individual geology varies
Arkansas Testing Requirements & Recommendations
No state mandate. EPA recommends all homeowners test.
Standard sub-slab depressurization systems are effective throughout the state.
Major Cities in Arkansas
Radon levels can vary significantly within Arkansas 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 Arkansas 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 Arkansas. 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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