The Northwest Langley WWTP, which serves 30,000 people in Langley, will be expanded to serve 230,000 people, including residents and businesses in Maple Ridge and Pitt Meadows. In addition, the plant will be upgraded to tertiary treatment.
[Narrator] Just North of the Golden Ears Bridge is a small construction area wedged between busy roads. Although this site is in Maple Ridge, it is part of the expansion of the Northwest Langley wastewater treatment plant.
[Negar Zakipour, Senior Project Engineer, Project Delivery, Metro Vancover] We’re building Golden Ears pump station and storage tank. By building this pump station and the storage tank, we are improving the pumping capacity for collecting the wastewater from the City of Maple Ridge and Pitt Meadows and convey to the Northwest Langley wastewater treatment plants.
[Narrator] The 22,000 cubic metre storage tank will hold wastewater during heavy rainfall preventing system overflows and protecting the environment. The new storage tank will feature murals by Katzie First Nation artist, Trenton Pierre. The Northwest Langley wastewater treatment plant expansion also includes enlarging the current site, building a new outfall pipe, and digging two tunnels underneath the Fraser River to the Golden Ears pump station and storage tank.
[Maria Adey, Project Engineer, Project Delivery, Metro Vancouver] So, Pitt Meadows and Maple Ridge wastewater from those cities currently is treated at Annacis Island Wastewater Treatment Plant which is a secondary treatment plant. However, with the completion of the new Northwest Langley treatment plant, the flows from Pitt Meadows and Maple Ridge will be diverted to the new plant. In addition to those components, we will also be upgrading the new treatment plant to a tertiary level of treatment.
[Narrator] Ground improvements are underway at the current plant which serves 30,000 people. After expansion, it will serve 230,000 people.
[Maria Adey] Those ground improvements will include the installation of stone columns and preload, which will densify the soil and enable the new treatment plant to have the seismic resiliency to withstand a major earthquake.
[Narrator] The Katzie and Kwantlen First Nations have archaeologists on the Langley site daily to search for artefacts. Construction on the overall expansion project is expected to continue to 2026.
Learn more about the overview of projects at the Northwest Langley Wastewater Treatment Plant.