The Annacis Island Wastewater Treatment Plant is one of our region’s largest wastewater treatment facilities. It receives and treats wastewater from 14 municipalities across the Lower Mainland so that it can be safely released back into the Fraser River.
Metro Vancouver is increasing the capacity of the current facility to meet the needs of our growing population and ensure it continues to protect public and the environment. Planned improvements include:
- Building a
new outfall pipe to carry treated wastewater from the plant to the Fraser River
- Increasing the size of the plant and its ability to treat more wastewater
- Repairing or replacing older parts of the existing plant
- Strengthening the plant to reduce the impacts of an earthquake
- Improving existing odour controls
- Building a more reliable back‑up power source
The Annacis Island Wastewater Treatment Plant improvements will happen in multiple phases and continue over the next several years.
The Annacis Island Wastewater Treatment Plant is located in Delta on Annacis Island
The Annacis Island Wastewater Treatment Plant currently treats wastewater using
primary and secondary treatment technologies. An expanded facility will ensure that the plant can manage a higher volume of wastewater, continue to keep odour to a minimum and will continue to operate in the event of a major earthquake.
There are over 20 projects planned as part of the on-site improvements of the Annacis Island Wastewater Treatment Plant. Improvement projects include:
- New trickling filters
- Secondary clarifiers
- A co-generation facility to make better use of green energy captured on site
Overview of the Annacis Island Wastewater Treatment Plant highlighted improvements