Drinking Water System

Poway operates a modern water treatment and distribution system. The heart of the city's water infrastructure begins with the importation of water from both the Colorado River and Northern California. Lake Poway serves as a storage reservoir and is able to store over 1 billion gallons of water at one time. Water flows through the Lester J. Berglund Water Treatment Plant, where approximately 3 billion gallons of drinking water are treated every year for the citizens of Poway. Once treated, the drinking water enters a system of pipes, pump stations, reservoirs for delivery to customer's homes and businesses.

Poway Water
Certified employee working on water main.

Water System Facts

  • Lake Poway holds about 1 billion gallons of water.
  • The city operates a conventional water treatment plant and produces about 3 billion gallons of drinking water each year.
  • Poway's drinking water meets or exceeds all state and federal standards for water quality.
  • The city maintains about 317 miles of water pipe.
  • There are approximately 2,898 fire hydrants throughout the city.
  • There are over 8,500 valves in the water system (including 8,486 distribution valves and 115 transmission valves). 
  • The water system also includes 15 pump stations, 20 pressure reducing stations, 18 potable water and one recycled water reservoirs. 
  • Employees working in the water system are required to be certified by the State of California to work in a water system.

Related Information

Regional Supply Sufficiency