Brown and Caldwell to support Metro Vancouver in wastewater treatment upgrades

Brown and Caldwell is supporting Metro Vancouver as it undertakes major upgrades at the world’s largest trickling filter solids contact wastewater facility at the Annacis Island Wastewater Treatment Plant. The project will increase capacity, meet the needs of a growing population, and protect essential utility operations against seismic events.

Located in Delta, British Columbia, the Annacis Island Wastewater Treatment Plant treats about 196 billion liters of wastewater annually, serving approximately 1.25 million residents in 14 municipalities across the Lower Mainland. It uses primary and secondary treatment technologies to remove organic matter from wastewater before safe release to the Fraser River — the world’s largest salmon-bearing river.