Water delivered to Sweetwater Authority consumers is obtained from a variety of sources. Generally, customers can expect to receive 70% of their water from local water supplies, including the Sweetwater River and the San Diego Groundwater Formation. The remainder is obtained from imported water sources.
Sweetwater Authority is deeply involved in programs to protect its water sources, and continually investigates ways to increase its local supplies of water. Programs include tracking development, watershed outreach and education, urban runoff diversion and treatment, and studies of aquifer storage.