This is one of two locations for the PureWaterSF Project (see San Francisco: PureWater SF East).

The San Francisco Purified Water Project (PureWaterSF) is a concept that envisions providing new, local drinking water supply in San Francisco. The project would treat secondary effluent sourced from one or both of San Francisco’s all-weather wastewater treatment plants through a multi-stage, multi-barrier advanced treatment process to produce water that meets state and federal drinking water standards.

The treated water would then be blended at one or more of San Francisco’s drinking water reservoirs. This treatment and distribution process is referred to as treated water augmentation, and State regulations enabling this were passed in late 2023.

A feasibility study has been completed identifying potential size, scale and other next steps. At this location, the project could provide 2 million gallons (7.5 million litres) per day of purified recycled water to augment the drinking water supply.

The San Francisco Purified Water Project