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Alki standby generator
Enhancing the Alki Wet Weather Treatment Station and 63rd Ave Pump Station for reliability to protect Puget Sound.
The Alki Standby Generator project will ensure permanent, reliable power for key wastewater facilities in West Seattle, preventing overflows into Puget Sound and nearby bodies of water while protecting water quality. During construction, there will be temporary disruptions to parking, sidewalks, and beach access, but all areas will be restored and improved upon completion.
Project update
May 2025
Construction set to begin Monday, May 12
Crews will finish site preparation and saw cutting along Beach Drive Southwest on Monday, May 12. They will be working in two areas. The first area is from the corner of 63rd Ave Southwest and Beach Drive Southwest towards 64th Ave Southwest. The second area is the intersection of 64th Ave Southwest for a watermain relocation.
To learn more, see our latest notification.
Past project updates
Project description
Installing this new generator brings important public health and environmental benefits to Puget Sound and your neighborhood
- Provides permanent and reliable power for important wastewater facilities serving West Seattle.
- Prevents wastewater overflows into Puget Sound and nearby bodies of water.
- Protects water quality.
Reliable power supply helps ensure our sewer system keeps working during outages and helps protect water quality in Puget Sound
Power outages disrupt operations of the facilities that can result in overflows. The Alki Standby Generator project will provide permanent and reliable electrical power to both the Alki Wet Weather Treatment Station (WWTS) and the 63rd Ave Pump Station. This will help stop stormwater and wastewater from overflowing into nearby neighborhoods and Puget Sound.
During construction, there will be temporary impacts to street parking, sidewalks, pedestrian ramps, and driveway access. Limited beachfront access will be on the eastern side of Charles Richey Sr. Viewpoint. We will work with the community to limit these disruptions and will share information about any impacts before they occur.
We will restore all work areas according to the City’s requirements and standards once construction is complete. This will include improved pedestrian ramps at the intersection of Beach Dr SW and 64th Ave SW.
Connecting the generator from the Alki WWTS to the pump station will require less equipment at the pump station. This means smaller changes to the footprint and visual impacts from the road.
Project location
Note: the map below includes conveyance lines (pipes) between the Alki Wet Weather Treatment Plant (outlined in blue) and the 63rd Ave Pump Station (green square). The "conduit route" between these two facilities is displayed on the About page.