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The following projects are being implemented as part of the Sewer System Improvement Program and are currently in pre-construction, construction, or have been recently completed.

Grey Infrastructure Projects

Through Phase 1 of the SSIP, our planned improvements will upgrade our critical aging and seismically vulnerable grey infrastructure like pump stations, sewer pipes, transport storage boxes and treatment facilities into a state of good repair.

Wastewater Treatment Facilities Projects

We have several upgrade projects occurring at our Southeast Treatment Plant, Oceanside Treatment Plant and North Point Wet Weather Facility. For more information about construction activities at the Southeast Treatment Plant specifically, visit

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Biosolids Digester Facilities

The proposed upgrades would replace and relocate the outdated existing solids treatment facilities with more reliable, efficient, and modern technologies and facilities.

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Headworks Facility

The project would replace the function of two existing headworks facilities, modify the Bruce Flynn Pump Station, and construct a new odor control structure.

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Westside Pump Station

Improvements and modifications are needed to ensure the facility is reliable and operationally flexible, that it contains equipment redundancy, and remains compliant with State and Federal regulations.

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Other Treatment Plant Projects

Existing Digesters Gas Handling Improvement Project

North Point Facility Outfall Rehabilitation Project

Digester Gas Utilization Upgrade Project

Collection System Projects

Our collection system includes the sewers, large transport/storage box structures, force mains (pressurized sewer pipes) and pump stations which work together to collect and transport wastewater to our treatment plants.


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Central Bayside System Improvement Project

The first phase of SSIP will look into improving the capacity, conveyance and reliability of the collection system on the Bayside of the City.

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Mariposa Pump Station Project

This project will construct a new pump station at the same location to accommodate full buildout of the Mission Bay community, the new Warriors Arena, and planned population growth in the Potrero Hill neighborhood.

Large Sewer Tunnel Projects
Force Main Rehabilitation at Embarcadero and Jackson Improvement Project

Drumm & Jackson Streets Sewer Improvement Project

 • Kansas and Marin Streets Sewer Improvement Project (ChineseSpanish)
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Other Collection System Projects

New Montgomery, Jessie, Minna, and Mission Street Brick Sewer Rehabilitation Project

• Mission Street, 16th to Cesar Chavez, Brick Sewer Rehabilitation Project

• 5th, North 6th, Division, and Sansome Streets CSD Rehabilitation Project

• Folsom Area Stormwater Improvement Project

Cargo Way Sewer Box Odor Reduction Project

Wawona and Vicente Stormwater and Water Main Replacement Project

Green Infrastructure Projects - Sustainable Stormwater Management

The SSIP will also construct, monitor and evaluate eight green infrastructure projects to manage stormwater before it enters our combined sewer system in each of San Francisco's eight urban watersheds. For information on our Green Infrastructure Grant Program, click here.

GI Valencia Green
Mission & Valencia Green Gateway

Project will create new plazas, improve pedestrian and bicycle safety, and manage stormwater with rain gardens and permeable pavement.

GI Permeable Wiggle
Wiggle Neighborhood Green Corridor

Project will improve stormwater management, walking, and biking conditions along the iconic Wiggle route.

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Chinatown Green

Project will manage stormwater and create pedestrian community focused areas in Chinatown Alleys.

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Sunset Boulevard Greenway

Project will include over 80 rain gardens to manage stormwater along a two mile stretch of Sunset Boulevard.

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Holloway Green Street

Project will manage stormwater through permeable pavement and green bulbouts and improve the street experience.

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Yosemite Creek Daylighting

Project will create a new creek replicating the historic Yosemite Creek and manage flows from McLaren Park.

Sunnydale Mini-Plaza Rendering
Visitacion Valley Green Nodes

Project will feature two distinct locations creating a mini-plaza on Sunnydale Ave and terraced rain gardens on Leland Ave.

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Baker Beach Green Street

Project will use green infrastructure near Baker Beach to improve stormwater management.

Last updated: 1/12/2021 9:32:09 AM