Radon Zone Map

All counties · Mississippi

Radon in Pontotoc County, Mississippi

2EPA radon zone (1 is highest)

Zone 21

The details

What the zone means
Moderate potential. EPA predicts an average indoor screening level from 2 to 4 pCi/L.1
Testing advice
EPA says every home should be tested, whatever the zone. Fix the home if radon is 4 pCi/L or higher and consider fixing between 2 and 4 pCi/L.1
EPA developed the zone map in 1993 and says it should not be used to decide whether a particular home needs testing. Test your home. State radon programs can help.

Sources

  1. Mississippi: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  2. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026

Checked 1 November 2026. "Secondary" marks a source used only because the official page could not be read.