Which U.S. State Uses the Most Water and What Is Most of the Water In California Used For?

California leads the list of states that use the most water, using almost 11 percent of the freshwater in the United States.

Most of this water is used to irrigate crops.

Next are Texas, Illinois, and Idaho, which together use about 28 percent.

Water is necessary for most life on Earth. Humans can survive for several weeks without food, but for only a few days without water.

A constant supply is needed to replenish the fluids lost through normal physiological activities, such as respiration, perspiration and when you pee.