Our Water

Sweetwater Authority is a publicly-owned water agency with policies and procedures established by a 7-member Board of Directors.

Sweetwater Authority provides safe, reliable water service (since 1977) to approximately 190,000 people in National City, Bonita and the western and central portions of Chula Vista, California.

Sweetwater Authority owns and operates Loveland Reservoir, Sweetwater Reservoir, a brackish groundwater desalination facility and deep freshwater wells. Water obtained in each of these areas is influenced by the 230-square-mile Sweetwater River Watershed, a land stretching from the Cleveland National Forest to San Diego Bay.

Helpful Documents


Large Sweetwater Authority Service Area

Future Perdue Water Treatment Facilities


The Draft Environmental Impact Report (DEIR) for the Robert A. Perdue Water Treatment Plant Master Plan for Future Facilities Report is now available for review.

Sweetwater Authority Boundaries

  • Gross land area (square miles): 41
    • Loveland reservoir: 5.1
    • Service area: 32
    • San Diego Bay: 3.7
    • City of San Diego: 0.2
  1. Daily Reservoir Levels

    A majority of the water delivered to Sweetwater Authority customers is obtained from the Sweetwater River. It is influenced by the land uses in its 230-square mile watershed, a land stretching from the Cleveland National Forest to the San Diego Bay.

  2. Water Supply

    Water delivered to Sweetwater Authority consumers is obtained from a variety of sources.

  3. Water Quality

    Learn about how we manage water quality.

  4. Facilities

    Sweetwater Authority owns and operates Sweetwater Reservoir in Spring Valley, Loveland Reservoir near Alpine, wells in National City and Chula Vista and a groundwater desalination facility.

  5. Fishing

    Sweetwater Authority owns and operates Loveland Reservoir near Alpine and Sweetwater Reservoir in Spring Valley. Currently, shore fishing is allowed at both Loveland and Sweetwater Reservoirs.

  6. Environmental Programs

    Sweetwater Authority (Authority) develops carefully-planned projects and conducts our vital water operations in a manner that is considerate to the environment and supports the Authority’s mission of having a balanced approach to human and environmental needs.

  7. Related Resources / Links

    View links to outside resources.