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PureWater SF: Facility Tour at SFPUC Headquarters

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SFPUC Headquarters

525 Golden Gate Avenue

San Francisco, CA 94102

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Join us for a tour of PureWaterSF at the San Francisco Public Utilities Commission (SFPUC) Headquarters.

Take an opportunity to see research in action and learn about how the SFPUC is treating and testing water in an innovative research project that explores water purification technologies at a building scale.

The PureWaterSF research project explores how we can treat and reliably produce purified water on a small (building) scale using wastewater generated onsite. For this project, we take approximately 80% of the recycled water currently produced by our constructed wetland treatment system (the Living Machine™) and purify it to a level that is expected to meet or exceed drinking water standards. The purified water is analyzed before it is returned to the building’s non-potable system, which is used for toilet flushing. With this project, we are collecting data to better inform future policy for water reuse in our city and state.

SFPUC Guided Tour Protocol*

Tours are FREE and are available to members of the general public. Toursare limited to maximum of 25 guests. Each attendee must register through Eventbrite. You do not need to bring a printout of your ticket.

All registered attendees 18 and over are required to bring a valid government issued photo ID.

Non-U.S. citizens must provide a valid passport.

Attendees are should arrive 10 minutes prior to tour start time to check in at the security desk. Children and youth under 18 are welcome, but must be accompanied by an adult or guardian. Please do not bring large backpacks or oversized bags as they are not allowed on the tour. No thumb drives.

Please note that we reserve the right to cancel tours.

Please note that if you arrive late and your scheduled tour group has left the main floor, you will not be able to join that tour and will need to reschedule.

For more information on our headquarters and operations, visit For other questions or for special request tours, email

Photography is allowed in our lobby and cafe area, but not in other areas of the building.

Please be advised that due to security issues we reserve the right to refuse anyone from taking part in a tour.

Thank you for your interest and for your cooperation.

We look forward to seeing you!

San Francisco Public Utilities Commission

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SFPUC Headquarters

525 Golden Gate Avenue

San Francisco, CA 94102

View Map

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