Public engagement
Learn how King County is working with the community to provide project information and identify potential impacts at West Point.
We’re committed to being a good neighbor at West Point and keeping the public informed of current projects and planned improvements that may affect the community.
Visit this page often to stay informed and involved as we share information about what's going on at the plant.
Community briefings and community event summaries
- United Indians of All Tribes Seafair Indian Days Powwow, July 19-21, 2024
- Community Meeting Mailer: October 19, 2023 at 6pm, and October 26, 2023 at 7pm
- 2023 Fall Community Meetings’ Summaries
- 2023 Fall Community Meeting Presentation
- United Indians of All Tribes Seafair Powwow, July 21-23, 2023
- Magnolia Community Council Board, January 19, 2021: Wastewater Treatment Division staff provided an overview of West Point Treatment Plant capital improvement projects.
News releases and blog articles
- Archeologist Dennis Lewarch honored with award for work at West Point, December 19, 2023
- Ready for the Next Rainy Season? The Work to Shore Up Clean Water Systems Begins Now., March 1, 2023
- Charging ahead with reliable battery power for West Point Treatment Plant, August 19, 2021
- Starting a decade of improvements at West Point Treatment Plant, May 5, 2021
Tours and videos
- There are currently limited education programs and tours of West Point due to ongoing, long-term capital improvement construction projects.
West Point videos
- Progress on power improvement at West Point, February 8, 2024
- Making King County’s wastewater treatment resilient to climate change, February 12, 2020
- Celebrating West Point employees, August 15, 2017
- The Future of Regional Water Quality, November 30, 2015
- West Point Treatment Plant Tour, July 25, 2013
Newsletters
Translations
2017 flood event
West Point suffered severe equipment failure and flooding early in the morning of February 9, 2017, while operating at maximum capacity during a storm. All repairs critical to plant operations were completed in April 2017. The plant resumed full compliance with environmental permits in May of the same year.
- King County Council's Independent Review reports:
- Final Report - Implementation Plan for AECOM Recommendations Q3 2019, November 2019
- Final Report - West Point Treatment Plant Independent Evaluation of Mitigation Strategies, March 1, 2019
- Final Report - West Point Treatment Plant Independent Assessment, July 18, 2017
- Presentation to the King County Council on the Independent Assessment of the West Point Treatment Plant, July 18, 2017
- Frequently Asked Questions – West Point Treatment Plant Restoration, revised May 19, 2017
- Presentation: Restoring the West Point Treatment Plant, March 18, 2017
- West Point Flooding Preliminary Findings Report, March 10, 2017 - 55MB
- Letter to Council, March 7, 2017
- Executive Summary–West Point Flood Investigation Findings Report, March 7, 2017
- System flow map
- Float switches
King County has completed analysis of water quality monitoring data that were collected during the restoration of the West Point treatment facilities damaged by the flooding of the plant that occurred on February 9, 2017. The West Point Flooding Event Water Quality Monitoring Report (27MB) was peer-reviewed by 3 external scientists and presents the data and findings of the effects of the flooding event on effluent and marine water quality.
- West Point Flooding Event Water Quality Monitoring Report, February 2018
- June 23, 2017 update
- June 9, 2017 update
- May 26, 2017 update
- May 12, 2017 update
- April 28, 2017 update
- April 14, 2017 update
- March 31, 2017 update
- March 17, 2017 update
- Summary: Marine and Environmental Monitoring Results as of June 23, 2017
King County monitors the West Point wastewater coming into the plant (influent) and the discharge to Puget Sound (effluent) for multiple parameters that can affect water quality: flow, total suspended solids, biochemical oxygen demand, pH, fecal coliform bacteria, residual chlorine, and nutrients. These parameters are routinely sampled either daily, weekly, or monthly, as required in the NPDES permit for West Point that is overseen by the Department of Ecology. This data is used with the marine water quality monitoring data, and compared to permit limits.
West Point restoration routine effluent water quality monitoring data
- June 23, 2017 update
- June 9, 2017
- May 26, 2017
- May 12, 2017
- April 28, 2017
- April 14, 2017
- April 7, 2017
- Chronic whole effluent toxicity report (April 27, 2017, summary pages)
- Acute whole effluent toxicity report (March 31, 2017)
West Point restoration effluent priority pollutant monitoring data
West Point restoration near-field effluent mixing water quality analysis
Discharge dispersion in Puget Sound
Map of Typical Winter/Spring Dispersion of the West Point Treatment Plant Effluent, April 2017
Historical technical reports on effluent plume studies of West Point:
- Bendiner, 1976
- Evans-Hamilton, 1975
Following collection of initial water quality monitoring data after the West Point Treatment Plant flooding event on February 9, 2017, and during the period of reduced treatment, a water quality monitoring summary report was prepared in February 2018 that evaluated effluent and Puget Sound water quality monitoring data collected in 2017. Additionally, the County collected chemical contaminant data for bottom sediments and marine organism tissues from different areas of Puget Sound in 2017, 2018, and 2019, and prepared six individual technical reports that evaluated any changes due to the flooding event:
- West Point Flooding Event Intertidal Sediment and Clam Tissue Report, February 2019
- Subtidal Sediment Report, November 2019
- West Point Flooding Event Dungeness Crab Tissue Report, February 2020
- Zooplankton Tissue Report, August 2020
- English Sole Tissue Monitoring Final Report, March 2022
- Synthesis Report on Impacts to Puget Sound from West Point Flooding Event, June 2022