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South Plant provides educational field trips for students in grades 4-12. Field trips can accommodate up to 40 students at one time and are free of charge.

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.

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

To register for a South Plant Program please email Katelyn Hunt at

Teachers can choose from the following program options:

Option Grades  Program length Number of classes offered per day
Plant tour with a focus on water quality
 6th-12th 2 hours  2
Wastewater Program
 5th 4 hours 2
Stormwater Program *DOES NOT include a treatment plant tour  4th  4 hours 2
Plant tour, plus water systems and sustainability program
 9-12 4 hours

Handouts and materials

Copies of all handouts will be ready for you, in the kits, when you arrive for your field trip.

General information

Cost Free
Program length 2-4 hours
Age minimum 9
Group size 10-40 people
Chaperones Grades 4-8: 4 adults/class
Grades 9-12: 2 adults/class
Pre-registration Required for all field trips, 2-4 weeks in advance.  Please contact Katelyn Hunt at
Dress code Tours take place outside and in an industrial setting; all visitors must dress appropriately and wear long pants and closed-toed shoes.
Accessibility All participants must be able to walk and travel up and down multiple levels of stairs. Advance notice is required for accessible tours and accommodations.
West Point aerial photo
West Point aerial photo
West Point aerial photo
Learn about King County’s Wheels to Water Program, which provides bus transportation for schools and community organizations to attend King County Wastewater Treatment Division programs.
South Plant
Gate 3/Dewatering Building entrance
Oakesdale Ave SW & SW 7th St
Renton, WA 98057
Directions to South Plant