Last year the Public Policy Institute of California published an interactive map on its website. When you mouse over each hydrologic region of the state, it shows how the population and per capita urban water use in that region has changed since 1960. The map was released in December as part of a report on California Water Myths, which highlights eight common water myths.

Despite a steadily increasing population, most regions of the state began cutting back per-capita water use after (more…)