Georgia Kayser, PhD is an Assistant Professor of Global and Environmental Health in the Herbert Wertheim School of Public Health at University of California, San Diego (UCSD) and Deputy Director of the University of California Planetary Health Center of Expertise. Her environmental health research focuses on adolescent and children’s environmental health, water quality, environmental determinants of risk, and environmental health inequities and disparities. In her research she has explored the factors that limit access to safe and sustainable drinking water, sanitation, and hygiene (WaSH) services, globally; identified environmental determinants of risk, including pesticide and microbiological contaminants in drinking water; and examined environmental health disparities that result from gender, racial/ethnic, and geographic inequities. This research informs environmental health programs and policy. Her methodological expertise is in the use of cross-sectional studies to explore WaSH risk factors for disease across countries, formative research to identify interventions, experimental and quasi-experimental methods to test specific interventions, and geospatial analysis to understand patterns of exposure. She has conducted research in over 20 countries across the Americas, sub-Saharan Africa, and South Asia with funding from government, international organization, and private sector sources.