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Biosolids Digester Facilities Project

Project Materials
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 • Response to Comments on Draft EIR
 • September 2017 Presentation
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(415) 554-3275
Current Project Timeline

Spring 2017 – Release of Draft Environmental Impact Report (EIR)
March 2018Response to Comments on Draft EIR
March 8 2018 - Planning Commission Meeting
Early 2018 - Final EIR

Fall 2018 – Start Construction
Summer 2024- Construction Complete
Summer 2025- Facility Start-Up
BDFP Render from Jerrold
Rendering of proposed Digester Facilities from Jerrold Avenue looking West

Built in 1952, the Southeast Treatment Plant (SEP) is located in the Bayview-Hunters Point community and treats 80% of the City's wastewater. After several years of planning and engagement with the community, a plan has been developed to address the long-standing issues of odors and seismic vulnerability, as well as other operational challenges related to the aging solids handling facilities at the SEP.

The proposed Biosolids Digester Facilities Project (BDFP) would replace and relocate the outdated existing solids treatment facilities with more reliable, efficient, and modern technologies and facilities that will help transform the SEP into a modern resource recovery facility, a City destination, a proud neighborhood asset, and an attractive workplace. In addition, the project would locate the digesters farther away from existing residences, make visual improvements in and around the SEP and allow us to meet our Levels of Service goals. 

For more information about construction activities at the Southeast Treatment Plant, visit

BDFP New Digesters
BDFP Pretreatment Facility
BDFP Recovery Building
Proposed new digesters Pretreatment facility Energy recovery building

Project Objectives

  • Address aging infrastructure – construct new modern, proven and efficient treatment technologies
  • Improve odor, noise, and visual quality
  • Improve seismic reliability
  • Beneficially use 100% of Biosolids and Biogas produced
  • Maintain regulatory compliance
  • Build critical processes with redundant infrastructure to provide reliability and operational flexibility
Learn more about how the Southeast Treatment Plant operates 24/7 to keep our community and environment clean! Get involved and help us protect our sewer system!
Tour one of our treatment plants
• Learn ways to keep our city clean and green

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Click on the image to hear project managers talk about upgrades.

About the SSIP

The San Francisco Public Utilities Commission (SFPUC) recently launched the Sewer System Improvement Program (SSIP), a 20-year citywide investment to upgrade our aging sewer system and provide a more reliable, sustainable, and seismically safe system now and for future generations. The SSIP includes a series of facility upgrades at the Southeast Treatment Plant (SEP) located in the Bayview neighborhood of San Francisco. Click here to learn more about the SSIP or for information on upcoming meetings, visit

Last updated: 3/14/2018 3:58:12 PM