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The Proposed Westside Recycled Water Project facilities would produce and deliver approximately two million gallons per day (mgd) of recycled water to a variety of users on the west side of San Francisco, primarily for landscape irrigation uses. Planned users include Golden Gate Park, Lincoln Park Golf Course, the San Francisco Zoo, and selected street medians. The water would also be used for limited commercial and municipal uses.
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| Playing field inside Golden Gate Park |
The facilities included as part of the proposed project are:
- Treatment Facility: A new recycled water treatment facility would be constructed at Oceanside Water Pollution Control Plan (WPCP). The treatment facility would include centralized membrane filtration and ultraviolet light disinfection to produce and deliver approximately two million gallons of recycled water per day.
- Storage Reservoirs: The project would require storage reservoirs. Three storage reservoirs are currently envisioned: a new 1.5 million gallon treated water reservoir at Oceanside WPCP, expansion of an existing underground reservoir in Golden Gate Park by approximately 1.5 million gallons, and a new one million gallon reservoir at Lincoln Park.
- Distribution Pipeline: Distribution facilities would include three pump stations, approximately seven miles of new pipeline to connect the treatment facility and storage reservoirs, and approximately six miles of pipeline to deliver recycled water to users. Distribution pipelines would be located underground mostly in city streets and in limited sections of Golden Gate Park.
Purpose and Need
Diversifying San Francisco’s water supply portfolio, through increased use of available local water sources such as recycled water and groundwater, would ensure that a reliable water supply is available in the event of a major earthquake, drought, or a decline in the snow pack. Developing recycled water as part of the water supply portfolio for non-potable uses would ensure that the best and purest sources of water would be available for the highest use – public drinking water.
When completed, the Proposed Westside Recycled Water Project would have the ability to deliver approximately two million gallons per day (mgd) of recycled water. Use of this recycled water for non-potable applications would expand the SFPUC’s water supply portfolio, increase the San Francisco Regional Water Supply System’s reliability, decrease demand on surface water, and decrease discharges to the Pacific Ocean.
