Water Quality
The Water Authority and Water Quality
As the water wholesaler to the San Diego area, the Water Authority does not treat the water it provides. The Water Authority purchases both treated and untreated water from the Metropolitan Water District (MWD), and the untreated water is sold to agencies with their own reservoirs and/or treatment facilities. Whether it is treated by MWD or a local agency, all treated water served in San Diego County meets or exceeds rigorous state and federal water quality regulations.
Water Authority member agencies that own and operate treatment plants within the county are:
The Water Authority also purchases treated water from Helix, Olivenhain, city of San Diego, and Poway to supply the Otay Water District, Padre Dam Municipal Water District, and Ramona. The cost of all treated water delivered by the Water Authority to its member agencies is the same regardless of the treatment source. The Water Authority is currently constructing the 100-million-gallon-per-day Twin Oaks Water Treatment Plant in north San Diego County. The plant is scheduled to begin providing treated water in April 2008.
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