Susan D. Richardson is the Arthur Sease Williams Professor of Chemistry in the Department of Chemistry and Biochemistry at the University of South Carolina. Prior to coming to USC in January 2014, she was a Research Chemist for several years at the U.S. EPA’s National Exposure Research Laboratory in Athens, Ga. For the last several years, Richardson has been conducting research in drinking water — specifically in the study of toxicologically important disinfection by-products (DBPs).