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Public engagement
Learn how King County is working with the community to provide project information and identify potential impacts at South Plant.
E-mail updates
- Celebrating 60 Years of South Treatment Plant – thank you for being part of our story! December 2025
- Get to know South Plant with our new fact sheet! October 2025
- Apply for a WaterWorks grant to fund water quality projects in your community, September 2025
- Register for our free tree pruning workshop at CitySoil Farm on August 21, August 2025
- Become a Clean Water Ambassador: Apply by April 21! April 2025
- Operator-in-Training Program Applications now open!, December 2024
- Check out the South Plant StoryMap, November 2024
- Summer 2024 newsletter, August 2024
- Earth Day is April 22, 2024
Community briefings and community event summaries
Online Open House: Preview of upcoming major improvement projects at South Treatment Plant, June 26, 2025
News releases and blog articles
The senior gardener at South Treatment Plant sees the beauty in it all, January 21, 2026
Protecting Puget Sound through source control, October 30, 2025
When electrical demand peaks, South Plant quietly fires up its own power supply, August 13, 2025
Firefighters train for real emergencies with rope rescue drill at South Plant, July 18, 2025
From purple pipes to purple plums: How a wastewater treatment plant is helping feed local families in need, August 9, 2024
Swapping backpacks for hardhats, a summer job like no other, September 15, 2023
King County’s wastewater ‘parks’ offer a dose of nature, minus the crowds, June 14, 2023
Ready for the next rainy season? Work to shore up clean water systems begins now, March 1, 2023
Wastewater becomes a resource for growing food with help from a Treatment Plant, February 13, 2023
City Soil Farm: A Record Year for White Center Food Bank Donations, January 25, 2022
Newsletters
Tours and videos
How we clean wastewater and recycle valuable resources at South Plant
Fully accessible and available in Spanish, Russian, Simplified Chinese, Traditional Chinese, and Korean.