California’s water systems move water supply from places of abundance to places of need, and from wet years to dry ones. 

These water systems are often categorized into three groups – Local Water Suppliers, the State Water Project, and the Federal Water Systems

California’s network of reservoirs, canals, and pumping stations form the backbone of our water supply systems.

Much of California’s water supply system was designed and built more than 50 years ago. Over the years California’s population has grown and the system that was designed to provide water to 20 million people simply can’t keep up with a population that is almost double that today.

In order to meet our future needs California must invest in additional conservation and recycling as well as new supplies that can be stored in reservoirs or groundwater aquifers and moved efficiently to parts of the state where they are needed.