Kentucky Radon Risk Guide

Radon Levels in Kentucky

Kentucky is classified as an EPA Zone 1 state with a high risk for radon. Average indoor radon levels range from 2 to 7 pCi/L, and approximately 36% of Kentucky homes test above the EPA action level of 4.0 pCi/L.

Kentucky Radon Summary

Risk LevelHigh Risk
EPA ZoneZone 1
Average Range27 pCi/L
Homes Above 4 pCi/L36%
Homes above EPA action level

High Radon Risk State

Kentucky is among the higher-risk states for residential radon. The Kentucky Department of Health strongly recommends that all residents test their homes. If you have not tested your home, consider ordering a test kit or radon detector today.

Key Facts About Radon in Kentucky

  • Kentucky has significant radon risk statewide
  • Eastern Kentucky's Appalachian geology creates elevated radon potential
  • The Kentucky Radon Program is part of the state Department for Public Health

Kentucky Testing Requirements & Recommendations

Kentucky recommends testing all homes, particularly those with basements.

Many Kentucky radon contractors specialize in older housing stock with complex foundations.

Major Cities in Kentucky

Radon levels can vary significantly within Kentucky 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.

Louisville
Moderate Risk
LexingtonBowling GreenOwensboroCovington

What Should Kentucky Residents Do?

1

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.

2

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.

3

Hire a Certified Contractor if Needed

Look for NRPP or NRSB-certified radon mitigation contractors in Kentucky. Mitigation systems typically cost $800–$2,500 and can reduce radon levels by 50–99%.

4

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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