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Raw sewage pump replacement

Learn about the raw sewage pump replacement project at West Point to replace the plant’s aging pump system and make seismic improvements to the building that holds the pumps.

Project update

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Project description

The raw sewage pump system at West Point was built in 1966 with the original facility. The original system uses 4 pumps to meet the needed capacity. Pumping untreated combined sewage over a long time has resulted in significant wear on the pumps. In addition, the system could fail during an earthquake due to its age.

The purpose of this project is to replace the raw sewage pump system at West Point and implement structural improvements to the facility that holds the pumps.


Project benefits

This project will improve both the pump system at West Point and the building that holds the pumps.

Replacing the pump system at West Point will build redundancy in the pump system. The current system needs all 4 pumps to meet maximum capacity needs and does not have capacity to handle potential overflows. The new system will only require 3 pumps of the 4 pumps to meet maximum capacity needs. The maximum capacity for the system can still be handled even if 1 pump needs maintenance.

This project will also make seismic improvements to the pump building structure in the event of an earthquake.

Learn more from the project FAQ sheet.


Project schedule

The project team analyzed and chose a preferred alternative to develop. The preferred alternative had the greatest value and lowest risk compared to the other 3 alternatives under consideration. (Learn more from the project FAQ sheet.) During the project design phase, the project team will develop the pump design, conduct a seismic analysis, and begin project permitting. The project team will also determine construction costs and impact and create an initial construction schedule. The project will then be ready to move into construction. Construction is expected to begin as soon as 2024. It will take approximately 1 year to replace each of the 4 pumps. Construction will last approximately five years, through 2029.


Community impacts and outreach

The County anticipates that impacts to the nearby community during construction, such as noise, will be minimal as construction will take place inside the treatment plant walls.

We will provide ongoing updates on our website as the project progresses. Sign up for email or text updates for current West Point Treatment Plant capital improvement projects below.