Radon Levels in Mississippi
Mississippi is classified as an EPA Zone 3 state with a low risk for radon. Average indoor radon levels range from 0.2 to 1 pCi/L, and approximately 2% of Mississippi homes test above the EPA action level of 4.0 pCi/L.
Mississippi Radon Summary
Key Facts About Radon in Mississippi
- Mississippi has among the lowest radon levels in the nation
- Alluvial and coastal plain geology contains little uranium-bearing rock
- Testing remains advisable — individual homes can vary
Mississippi Testing Requirements & Recommendations
No mandate. EPA recommends testing for all US homes.
Radon mitigation is rarely needed in Mississippi.
Major Cities in Mississippi
Radon levels can vary significantly within Mississippi 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 Mississippi 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 Mississippi. 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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