Climate change combined with a growing demand for water has led to a dwindling amount of water for seven western states, including Arizona, as well as 30 Native American tribes that depend on Colorado River water. Arizona could face losing a significant part of its water supply, creating a big need water reuse, such as turning wastewater into drinkable water. Enrique Vivoni, a professor of in the School of Sustainable Engineering and the Built Environment, part of the Fulton Schools, and the director of the Center for Hydrologic Innovations, describes various steps Arizona could take to help maintain adequate water supplies. A change in water rights is also expected also present some challenges to various regions and communities. 

See also: Arizona’s declining share of Colorado River likely to hold steady for a year, Arizona Republic, Arizona Republic
Vivoni tells Central Arizona Project board member that dry soils are soaking up precipitation before it can reach the Colorado River, reducing the flow of water 

Preparing for a drier future on the Colorado River basin, ASU News
Vivoni is quoted