About Us

Walnut Valley Water District (WVWD) provides drinking water and recycled water to nearly 100,000 residents throughout the city of Diamond Bar, portions of the cities of Walnut, Industry, Pomona, West Covina, and the easterly unincorporated area of Rowland Heights. We are a California special district with policies and procedures directed by an elected five-member Board of Directors. Our infrastructure is worth nearly $1 billion, and we have an annual budget of $40 million.

We import 100% of our drinking water supply through our wholesale and retail partners, Three Valleys Municipal Water District and the Metropolitan Water District of Southern California. Our water travels hundreds of miles from the Colorado River Aqueduct and the State Water Project in Northern California through our system before it reaches customers’ homes, businesses, and schools.

Our Mission Statement

Dedicated to meeting the water supply needs of the communities we serve.

Walnut Valley Water District was formed in 1952 for the purpose of providing a drinking water supply to the residents of Walnut Valley. Today, the District maintains 434 miles of distribution mains, 32 reservoirs, and 17 pump stations to ensure high-quality and reliable drinking water.

The District is governed by a five-member Board of Directors who are elected to overlapping four year terms by the citizens they represent. The Board is charged with the responsibility of establishing the policies of the District. The General Manager is appointed by the Board of Directors and is responsible for all aspects of the day-to-day operations of the District.