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Construction at the Southeast Treatment Plant

Welcome to the new Southeast Treatment Plant (SEP) construction webpage. You asked to have up-to-the-minute information on what the SFPUC is doing in your neighborhood. We heard you! We want to make sure you are prepared for our construction activities.

Greenhouse Removal Two-Week Look-Ahead
  • Installation of temporary construction fencing: completion estimated 6/22/2018
  • Installation of permanent ornamental fencing will start the week of 6/25/2018
  • Greenhouse removal, starting at Quint Street, is scheduled to begin within the next two weeks
New Headworks Facility Project Look-Ahead
  • Activities occurring in and around City trailers on Phelps Street will continue through June. You may see construction vehicles and equipment parked along the sidewalk in front of the City trailers at times. 
  • Major construction activities, including lane shift on Evans Avenue, are estimated to begin in August.
  • As construction activities inside the SEP are ongoing, some construction noise and movement of large equipment can be expected Monday - Friday, 7:00 am - 8:00 pm.
Construction Updates


Construction Kick-off Notice


(415) 551-4737

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Monday & Friday
1800 Oakdale Ave

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2018 Milestones

Click on the [ ] icon in the top right to open the map on your smartphone to view directly and save.

At Work in Your Neighborhood

Built in 1952, the Southeast Treatment Plant (SEP) treats 80% of the City’s wastewater, but many of the plant’s facilities need to be upgraded or replaced. The Sewer System Improvement Program (SSIP) projects at the SEP focus on making the plant smell better, look better, operate more efficiently, and protect our critical equipment in the event of an earthquake.

SSIP projects at the Southeast Treatment Plant will accelerate the SFPUC’s vision to transform San Francisco’s largest wastewater treatment plant into a start of the art resource recovery facility, a City destination, a proud neighborhood asset and an attractive workplace. To learn more about the Sewer System Improvement Program, click here.

For construction impacts and notices nearby SEP, sign up for email updates. For information about other construction projects across the City, visit our Construction in Your Neighborhood Map or

SEP Construction Digsters 2
 Jobs and Resources

To learn more about the Headworks Facility Project, view our recent SEP Construction Business Briefing, read our fact sheet available in English, Spanish and Chinese, or visit our project website.

Last updated: 6/18/2018 2:13:04 PM