Mapping of Radon Potential in Utah Using Geology, Test Results, Population, and Survey Data

BACKGROUND:  As part of the Environmental Public Health Tracking Network, Utah was interested in elaborating on the work done with the Radon, Lung Cancer and Smoking Content Work Group. Additionally, radon is becoming a major health concern in Utah. The attention radon has been getting encouraged the need for better data representation and high quality maps for use by legislators, local health department personnel, and the public. 

METHODS:  Data from several sources such as state geologists, radon program experts, census populations, and behavioral survey responses, were compiled to create composite maps of radon potential. One goal was to create a map that could represent where indoor radon potential is high based on geology and dense population centers. Additionally, smoking prevalence was overlaid to highlight areas of particular concern to the risk of lung cancer among Utah residents.

RESULTS:  Creating a map with radon potential, smoking rates, and lung cancer rates is difficult to prepare and message properly for public use. Instead, showing several maps together with appropriate messaging and overlays is the best option for Utah. Additionally, the use of several data sources to create one base radon potential map was integral in the presentation of the risk of radon in Utah. 

CONCLUSIONS:  The composite map of radon potential may be the best resource for the risk of radon in Utah. The use of supporting maps with the inclusion of population density and smoking rates may help guide radon outreach activities. Additionally, inclusion of lung cancer rates on radon maps was found to be a hindrance in the representation of radon as a health issue in Utah.