The Santa Clara Valley Water District provides stream stewardship, wholesale water supply and flood protection for Santa Clara County, California, in the southern San Francisco Bay Area. The district encompasses all of the county’s 1,300 square miles (3,400 km2) and serves the area’s 15 cities, 1.8 million residents and more than 200,000 commuters. The districts three water treatment plants can produce as much as 210,000,000 US gallons (800,000 m3) of drinking water a day. Another part of the districts mission is to manage flood and storm waters along the county’s hundreds of miles of creeks and rivers in an environmentally sensitive manner. The district owns many dams, including: In December 2010 the Santa Clara Valley Water District was chosen as the water agency award recipient for the California Sustainability Alliances Sustainability Showcase Award. This award honors the Districts commitment to sustainability as shown through their award winning water use efficiency and conservation program.