Water System Infrastructure

Potable and Recycled Water Storage Reservoirs

The District has 17 Potable water storage reservoirs with a total capacity of 48 million gallons to serve a customer water demand of approximately 14 million gallons per day. In the event of an emergency, this storage represents a supply of water for just over three days.

The District also has one recycled water storage reservoir with a total capacity of 5 million gallons.

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Potable Water System

The District operates and maintains approximately 150 miles of water mains, 1,900 fire hydrants and 13,500 customer service connections.

The District receives 100% of its potable water supply from the Metropolitan Water District of Southern California. Water from the Colorado River and Northern California is treated at Metropolitan’s F.E. Weymouth Filtration Plant in La Verne, California, and is delivered to the District through three water service connections.

Inside of Potable Water System RoomClose up of Potable Water System Pumps


Booster Stations

The District has a total of 8 pump stations consisting of 22 pumps pumping water to various elevations throughout our service area.

Emergency Power Sources

In the event of a power failure, the District has the resources to continue pumping water to the various elevations.

Natural Gas Powered Engines

The natural gas powered engine and pump combination produces approximately 750 gallons per minute.

Portable Diesel Powered Emergency Generators

The District has portable emergency electrical generators. One emergency generator has the capability of meeting all of the power demands for any one of the 8 pumping stations.

Automatic Meter Reading System

To meet rapid growth and control costs, the District was the first water agency in California to implement automated meter reading. This system allows our personnel to read meters on both industrial and residential sides of the street from their vehicle as they drive their assigned route – they are able to read 3,000 meters per day as opposed to 500 manual reads.