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Wastewater Treatment Plant Tours

Have you ever wondered what happens to the dirty water from your shower, laundry and toilet after it goes down the drain? What about the runoff from lawns and gardens, and rainwater and car washing? 


Tours Fill Up Fast. Sign Up Now!

We offer FREE tours for San Francisco residents two Saturdays each month at 10 AM. Tours are offered at the Oceanside Wastewater Treatment Plant and the Southeast Wastewater Treatment Plant. Sign up at our eventbrite page for an upcoming tour!

Free Tours for Professional Groups

We also offer tours for professional groups and industry-specific visitors on an appointment-only and case-by-case basis, at our Southeast Treatment Plant in the Bayview, usually Wednesdays and Fridays, March through October, starting either at 10:00am or 1:00pm. We do not offer professional tours at Oceanside Treatment Plant.

To sign up, please submit a Group Tour Request Form, preferably two weeks in advance.  

toursFree Tours for School Groups

San Francisco public and private school students in at least the 6th grade and at least 11 years old can take a free tour too! School tours are offered on Wednesdays and Fridays at 10:00am or 1:00p.m at our Southeast Treatment Plant in the Bayview, March through October. Check out this cool video about our school tours to learn more!

For grades 6 and 7, we require chaperones at a 1:6 ratio. For grades 8 and up, we require chaperones at a 1:8 ratio. 

To sign up, please submit a School Tour Request Form at least two weeks in advance.

 Image of Factsheet for Treatment Plants

 Treatment Plants Factsheet

Tour Specifics

  • Tours take two hours to complete.
  • Available for groups of up to 30 people.
  • Attendees over 18 years of age must present a valid photo ID on the day of the tour.
Tour Safety

Treatment plants are functioning industrial sites in operation 24-hours a day, seven days a week. Hard hats are provided and must be worn at all times while on tour. Sturdy closed shoes and socks, long pants or long skirts are required for both your safety and comfort. NO flip-flops, sandals, clogs, open toed shoes, shorts, or skirts. If you are not wearing the appropriate attire you may be prohibited from taking the tour.

Special Needs
While these tours involve quite a bit of walking, climbing of stairs, and going underground in tight hallways and tunnels, we can change the route to accommodate wheel chairs, canes and walkers. We have no facilities for, and cannot accommodate young children, infants, or strollers. 

 Oceanside Water Pollution Plant

Oceanside Water Pollution
Control Plant

Oceanside Treatment Plant

  • Located in San Francisco’s Outer Sunset District at 3500 Great Highway, 94132
  • Tours for SF residents are available one Saturday each month. Sign up for a resident tour.


 Southeast Water Pollution Plant

Southeast Water Pollution
Control Plant

Southeast Treatment Plant

  • Located in San Francisco’s Bayview District, 750 Phelps Street, 94124
  • Tours of the Southeast Treatment Plant for SF residents are available one Saturday each month, from May through October. Sign up for a resident tour.
  • Tours for groups and schools are given Wednesdays and Fridays from March through October.


 Please be advised that due to security issues we reserve the right to refuse anyone from taking part in a tour. We also reserve the right to cancel tours in the event of a Plant or City emergency.  

Contact Info:

Phone: (415) 695-7375
Fax: (415) 695-7377

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Last updated: 8/7/2017 4:49:21 PM