Water: Brought to you by Central Arizona Project. The 336-mile CAP system took 20 year to build, cost $4 billion, and is an engineering marvel that has contributed dramatically to our quality of life and the sustainability of the state’s water supply and economy.
Water:
Brought to you by Central Arizona Project

The 336-mile CAP system took 20 years to build, cost $4 billion, and is an engineering marvel that has contributed dramatically to our quality of life and the sustainability of the state’s water supply and economy.

Annual Water Quality Report summarizes 2024 results
Central Arizona Project reliably delivers raw Colorado River water to central and southern Arizona. As a service to our stakeholders, we also test water quality!
Public Meetings
Unless otherwise noted, all meetings are held at CAP Headquarters, 23636 N. 7th St., Phoenix, AZ. Sign up to be notified of CAP board meetings.


Water Supply
Colorado River water: Adapting, protecting and building resiliency.


CAP System
Reliable deliveries to central and southern Arizona.
About Us
Central Arizona Project (CAP) is a 336-mile system that supplies Colorado River water to the most populated regions in Arizona, and delivers more tribal water than any other organization in the United States.
Contracting
Doing business with CAP. CAP engages in a wide range of activities while operating and maintaining the components of the system, and a great variety of equipment, supplies and services must be purchased to support these operations.