Global climate change is clearly acknowledged to pose risks to California’s water, though the focus has primarily been on water supply-side changes (e.g. decreased snowpack, earlier snowmelt, and more extreme floods and droughts). Yet along with these shifts in the quantity, timing, and reliability of freshwater supplies, climate change will also have important impacts on water demand. In particular, increased temperatures and altered precipitation patterns will affect the evapo-transpiration of plants and thus, total outdoor water demand. In addition, increased temperatures will impact cooling requirements, and therefore total indoor water demand. At the same time, a variety of other factors will continue to influence water demand such as population growth, development patterns (e.g., where the population grows), changes to the state’s industrial mix and employment (e.g., manufacturing jobs being replaced by service jobs), and on-going water conservation programs and standards (e.g., 20% reduction in per capita water use by 2020 and new water-use efficiency standards for fixtures and appliances).