Dr. Blatchley is the Lee A. Rieth Professor in Environmental Engineering at Purdue University, where he holds a joint faculty appointment in the Lyles School of Civil Engineering and the Division of Environmental & Ecological Engineering. Professor Blatchley conducts research in the general area of physico/chemical processes of Environmental Engineering, with particular emphasis on engineering applications of ultraviolet (UV) radiation (disinfection, direct photolysis, advanced oxidation processes, advanced reduction processes), disinfection by-product dynamics, chlorine chemistry, swimming pool chemistry, and water supply in developing countries.