Welcome to the SF Sewer System Master Plan Project, an effort led by the San Francisco Public Utilities Commission (SFPUC). This website has been created to help you learn about the city's sewer system and master plan, and give you an opportunity to participate in the planning process. 

Tell us what you think about recommended improvements.  Take our new survey.

For a chance to visit "the city under The City", request a free copy of our Wastewater DVD.

Take a tour of one of our Wastewater Treatment Plants to find out how we get dirty water clean again!

If you are experiencing a sewer emergency, please call 311. Please click here for more information.