2022 International Radon and Vapor Intrusion Symposium

ON-SITE RADON IN WATER MITIGATION in TWO PRIVATE WELLS IN GEORGIA USING AIRWELL® MITIGATION SYSTEM
Uttam Saha*1, Joel Burnsed2, David Parks1, Pamela Turner3, and Derek Cooper4
*1Agricultural and Environmental Services Laboratories, College of Agricultural and
Environmental Sciences, The University of Georgia, Athens, GA
2Walton County Extension Coordinator and ANR Agent, The University of Georgia Extension,
Monroe, GA
3Department of Financial Planning, Housing and Consumer Economics, College of Family and
 Consumer Sciences, The University of Georgia, Athens, GA
sahau@uga.edu

Abstract

In Georgia, an increasing number of wells are showing radon concentration exceeding EPA’s suggested AMCL of 4,000 pCi/L , preferably below their proposed MCL of 300 pCi/L. Mitigation of radon in water is fairly new relative to soilgas reduction in homes. A point of entry 'Aeration' or 'Granular Activated Carbon' treatment system is commonly used. However, mitigation of radon higher than 100,000 pCi/L water has not been well documented by any methods. Airwell® technology that claimed to be able mitigate any high level of radon in water seemed to lack enough supportive evidence from real-life situations. To test the application, in collaboration with the company, we installed onsite demonstrations of radon mitigation using Airwell® in two private wells in Walton County, Georgia containing 9,302 and 145,498 pCi/L radon. Post-mitigation radon concentrations in these two wells are being monitored for two years at various intervals to evaluate the long-term mitigation performance along with maintenance needed.