William Mitch is a Professor in the Department of Civil and Environmental Engineering at Stanford University. He has studied disinfection byproduct formation mechanisms over the past 20 years, with a particular focus on nitrosamines. His research focuses on conventional drinking water and potable reuse, including MF/RO/AOP systems, O3/BAC-based systems, advanced oxidation processes and treatment of RO concentrate. He has evaluated techniques to minimize the formation of disinfection byproducts. He obtained a BA in Archaeology from Harvard University and MS and PhD degrees in Civil and Environmental Engineering from the University of California at Berkeley. He received the 2004 Outstanding Doctoral Dissertation Award from the Association of Environmental Engineering and Science Professors and Parsons Engineering, and a NSF Career Award in 2007. He served as the Chair of the 2017 Disinfection Byproducts Gordon Conference. He has received research funding from the National Science Foundation, the Water Research Foundation, and the United State Department of Agriculture. He has served on the EPA’s Scientific Advisory Panel’s Drinking Water Committee and on National Water Research Institute expert panels evaluating potable reuse projects for the Las Virgenes-Triunfo drinking water plant and the cities of Los Angeles and San Diego. He holds a PE license in California.