About Us

West Valley Sanitation District has been providing high quality wastewater collection and disposal services for residents and businesses in our service area. The District is committed to quality, thoroughness, and personal service. The latest technology is used to ensure that we meet our commitment to you.


The District was formed in 1948 as County Sanitation District No. 4 of Santa Clara County under the provisions of the California County Sanitation District Act. In 1988 the District changed its name to West Valley Sanitation District of Santa Clara County, to reflect its geographical service area.

Service Facts

West Valley Sanitation District provides wastewater collection and disposal services for the cities of Campbell, Monte Sereno, Los Gatos, much of Saratoga and some unincorporated areas of the County within the district boundary.

mission statement

  • Beginning with a population of 20,000 in 1948, the District now serves a population of approximately 110,000.
  • The District's service area is approximately 28 square miles.
  • The wastewater collection system maintained and operated by the District consists of approximately 600 miles of sanitary sewers (415 miles of force main, branch, main, and trunk sewers; and 185 miles of lower sewer laterals), including three pump stations.
  • The District provides sanitary sewer maintenance, repair, and rehabilitation throughout the entire system.