Solano County Water Department

Find Solano County California water departments, districts, authorities, boards, and services. Water departments provide information on drinking water, treatment plants, sewage treatment, water conservation, and testing.


Benicia Water Billing 250 East L Street Benicia CA 94510 707-746-4225


Fairfield Water Department 1000 Webster Street Fairfield CA 94533 707-428-7346

Suisun Water Department 701 Civic Center Boulevard Suisun CA 94585 707-421-7325

Vallejo Water Billing 202 Fleming Hill Road Vallejo CA 94589 707-648-4345

About Solano County Water Departments

The Solano County Water Department or Water Utility is a government agency or private company that operates a public water system, which provides potable tap water directly to residential, commercial, industrial, and institutional customers in Solano County, CA.

You may contact the Water Department for questions about:
  • Water utility bills and payments
  • Solano County drinking water
  • Drinking water quality testing and safety
  • Water treatment facilities in Solano County, CA
Solano County Water Utility Companies

Water Departments in Solano County operate as an utility and are self-sustaining operations funded through user fees. Solano County water rates may be subject to approval from a state regulatory authority such as a California Public Service Commission or Utility Control Authority.

Public Drinking Water

Water Departments, or Water Companies in Solano County typically own the sources of drinking water they provide and must manage and maintain those sources and their surrounding areas. Surface sources include reservoirs, lakes, and rivers. Solano County groundwater sources can be found in pockets beneath the ground, which can be accessed by drilling wells. Maintenance of Solano County drinking water source sites and limitations on permitted activity around water sources helps minimize contamination. However, drinking water requires treatment prior to distribution to customers.

Water Treatment Facilities in Solano County, CA

Solano County water treatment facilities are used to remove contaminants and make drinking water safe for consumption. Treatment of water begins with the removal of the larger particles in the water through processes known as coagulation, flocculation, and sedimentation. After the large particles are removed, water is filtered through materials such as sand, gravel, and charcoal to remove dissolved particles. The final stage of treatment involves disinfection using chemicals or ultraviolet irradiation. Solano County Water Departments may add fluoride to water at this stage as part of a community health effort to support oral health in the general population. Water Departments are responsible for the day-to-day operations and maintenance of Solano County water treatment facilities. Equipment must also be periodically replaced and treatment processes may also be periodically upgraded.

From the treatment plant, water reaches its customers through a distribution system consisting of pipes, referred to as water mains, storage tanks, and pumping stations. Individual customers connect to water mains to bring public drinking water directly to their properties in Solano County, California.

Water Testing in Solano County

Water Companies typically have a laboratory or testing division responsible for monitoring the quality of tap water throughout the process, from source to distribution. California state regulations require Water Utilities to prepare and issue Solano County water quality reports to the general public several times per year.