Radon Levels in Florida
Florida is classified as an EPA Zone 3 state with a low risk for radon. Average indoor radon levels range from 0.2 to 1.2 pCi/L, and approximately 2% of Florida homes test above the EPA action level of 4.0 pCi/L.
Florida Radon Summary
Key Facts About Radon in Florida
- Florida has among the lowest radon levels in the continental US
- The limestone geology and high water table limit radon migration
- Phosphate mining areas in central Florida can have localized higher levels
- Slab-on-grade construction (common in FL) naturally limits basement exposure
Florida Testing Requirements & Recommendations
No state mandate. EPA still recommends testing even in low-risk areas.
Radon issues in Florida are uncommon but not impossible — particularly in older concrete block homes.
Major Cities in Florida
Radon levels can vary significantly within Florida 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 Florida 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 Florida. 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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