Water Scarcity as a Community Health Issue in California Submitted in partial fulfillment of the requirements of the Masters of Public Health at the University of Pennsylvania Amy C. Fuller July 2009 Produced under the supervision of: Carolyn Cannuscio, ScD Assistant Professor of Family Medicine and Community Health, Section on Public Health, University of Pennsylvania Stan Laskowski Lecturer/Advisor in the Department of Earth and Environmental Studies, University of Pennsylvania School of Arts and Sciences Christiaan Morssink, PhD, MPH Lecturer/Adjunct Assistant Professor of Nursing, University of Pennsylvania School of Medicine (MPH Program), School of Nursing Abstract The issue of potential public health effects related to water scarcity in California is discussed. California has the highest population in the United States and uses large amounts of freshwater withdrawals for household, agricultural, and industrial purposes. Considering that the state is in its fourth year of drought and that climate change predicts reduced precipitation and smaller snowpacks, it can be assumed that California will face serious water shortages in the coming years. It is important to consider the potential health effects of these shortages. This paper discusses current California water sources, highlights potential public health effects using select case studies, and proposes future research and policy initiatives. Water diversions affecting the Gila River Pima Indian community led to high levels of diabetes and obesity. Draining of the Owens and Mono Lakes created dust storms that negatively affect respiratory function. Future water projects should be based on comprehensive discussions of how water allocation will impact communities and the natural landscape. Creation of a multi-level task force would facilitate communication between water partners and lead to better protection of human health.