Margaret (Meg) Hathaway is Branch Chief of the Antimicrobials Division’s Regulatory Management Branch 1 in EPA’s Office of Pesticide Programs, in which role she oversees the regulation of antimicrobial pesticides containing ethylene oxide, quaternary ammonium compounds, and sodium and calcium hypochlorite as well as registrations used as water purifiers. Prior to being in AD, Meg served as Senior Regulatory Specialist for the Herbicide Branch of OPP’s Registration Division from 2019 until 2023. In that role, Meg developed policy decisions on high-profile herbicides such as 2,4-D, dicamba, and glyphosate. Before joining the Registration Division, she worked for eight years as a Chemical Review Manager in OPP’s Pesticide Reevaluation Division working on registration review. Meg holds a Master of Public Affairs specializing in policy analysis and a Master of Science in Environmental Science specializing in water resource management from Indiana University’s O'Neill School of Public and Environmental Affairs.