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Environmental services

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View driving directions.

Brightwater Center: the Education & Community Center and Park at the Brightwater Clean-water Treatment Facility

Tour the Treatment Plant

Influent screening area

Plant tour (pump gallery)

Digester tanks
Tours can accommodate 20 visitors per available King County tour guide

Learn how wastewater can be recycled into reusable water, energy, and nutrients for plants and soil. Tours encourage visitors to think about responsible water use, the products they use and how everyday choices can help protect Puget Sound.

General information

Tours are available for high school groups, community groups, professional groups, and international visitors. Tours are approximately 2 hours in duration. All participants must be aged 9 and up, able to walk approximately 1 mile and travel up and down multiple levels of stairs. Tours take place outside, in an industrial setting; all visitors must dress appropriately including long pants and closed toed shoes.

All tours require pre-registration online.

  • High School Tours – available for high school students; go to high school program for more information. 
  • General Community Tours – available for general community members or small groups; community tours occur on Saturdays throughout the year, go to tour information for more details of dates and times (best option for scout groups, home school groups, etc.) Pre-register here.
  • Professional or University Group Tours – available for groups of 10 or larger; scheduled based on staff availability; Pre-register here
  • International Visitors – available for groups visiting from other countries; please contact Susan Tallarico at or call 206-263-8930 for more information and scheduling
  • Elementary and Middle School groups - please see our education programs page to learn more about treatment plant tours and other science-based programs offered at Brightwater.

Wastewater tours focus on the following topics:

  • Water cycle and nutrient cycle
  • Wastewater treatment and human health
  • Human impacts to water systems
  • Pollution prevention and water conservation

View Driving Directions to Brightwater and download Tour Participant Information Sheet.