Community Input Survey: Elliott West Wet Weather Treatment Station Upgrade
Community Input Survey: Elliott West Wet Weather Treatment Station Upgrade
King County Wastewater Treatment Division is planning to upgrade the Elliott West Wet Weather Treatment Station (EWWTS). Like many cities around the country, older parts of King County’s sewer system use the same set of pipes to carry both sewage and stormwater. This combined wastewater goes to the West Point Treatment Plant in the Magnolia neighborhood to be treated.
During storms, the pipes can fill with stormwater that runs off roofs, driveways, and streets. When the system is overwhelmed, it is designed to overflow into waterways. These overflows are called combined sewer overflows, or CSOs.
The CSO outfalls in these neighborhoods provide drainage relief points to keep the sewer system working and to prevent sewer backups into homes and businesses by releasing excess water and sewage into local water bodies. (The water released through a CSO outfall typically contains about 90% stormwater and 10% wastewater.) This is when EWWTS is called into action.
In service since 2005, EWWTS provides treatment to sewage and stormwater during large storms to reduce untreated overflows of combined wastewater into Elliott Bay.
Without wet weather treatment stations like EWWTS, polluted stormwater runoff and sewage is discharged into our waterways with no treatment.
However, EWWTS needs an upgrade to provide more reliable compliance with environmental regulations, meet the demands of a growing population, and prepare for climate impacts.
This is a major investment to ensure King County continues to protect public health and the environment for years to come.
Caption: Early draft design of Elliott West Wet Weather Treatment Station Upgrade. Not an accurate representation of final design concepts.
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Welcome
Thank you for helping us improve our project! We’re refining the 30% design for the upgraded Elliott West Wet Weather Treatment Facility. Your thoughts will guide changes we make at 60% design. This survey will take about 10 minutes to complete.
Instructions:
For each following section, please follow the directions. You will see several kinds of questions.
- Multiple choice: choose the answer that best represents your opinion.
- Open-ended questions: write a short response about what you think.
- Scale: rate the topic on a scale from 1 (Not Satisfied) to 5 (Very Satisfied). If something doesn't feel relevant to your experience, you can check "No opinion."
You'll also have space to share:
- What you think works well
- What could be improved
- Any comments or concerns