Maryland Radon Zone Map 

     
     
      Maryland Radon
     What do the colors mean?
 
zone1 Zone 1 counties have a predicted average indoor radon screening level greater than 4 pCi/L (picocuries per liter) (red zones) Highest Potential
zone2 Zone 2 counties have a predicted average indoor radon screening level between 2 and 4 pCi/L(orange zones) Moderate Potential
zone3 Zone 3 counties have a predicted average indoor radon screening level less than 2 pCi/L (yellow zones) Low Potential


     The EPA offers this information in regard to the map:

    The purpose of this map is to assist National, State, and local organizations to target their resources and to implement radon-resistant building codes. This map is not intended to be used to determine if a home in a given zone should be tested for radon. Homes with elevated levels of radon have been found in all three zones. All homes should be tested regardless of geographic location.

     
The map should not be used in lieu of testing during real estate transactions!

     The Map was developed using five factors to determine radon potential: 1) indoor radon measurements; 2) geology; 3) aerial radioactivity; 4) soil permeability; and 5) foundation type. Radon potential assessment is based on geologic provinces. Radon Index Matrix is the quantitative assessment of radon potential. Confidence Index Matrix shows the quantity and quality of the data used to assess radon potential. Geologic Provinces were adapted to county boundaries for the Map of Radon Zones.

Independent Home Inspection can test your home for Radon at the time of inspection.
  Call me for full details.

Radon Testing