Station Est d'épuration des eaux usées - Québec City Wastewater Treatment Plant

Station Est d'épuration des eaux usées is a major wastewater treatment facility serving the eastern districts of Québec City, in the province of Québec, Canada. With a population served of over 426,000, it is classified as a large agglomeration under Canadian wastewater regulations. The plant is situated in the Maizerets neighborhood, near the St. Lawrence River. As a large-scale municipal plant, it operates under the regulatory framework of the Canadian Council of Ministers of the Environment (CCME) and provincial Québec regulations, which mandate secondary treatment for plants of this size. The designed capacity is 1.00 (likely in million cubic meters per day or similar unit), indicating substantial infrastructure to handle the region's wastewater. The plant's treated effluent is discharged into the St. Lawrence River, one of North America's most significant waterways. The river supports diverse aquatic life and is a critical migratory corridor for fish species. The plant plays a key role in protecting the river's water quality and the downstream ecosystem, including the Gulf of St. Lawrence.

The plant discharges into the St. Lawrence River, which flows northeast through Québec and into the Gulf of St. Lawrence, a major estuary and marine environment. The river supports diverse aquatic life, including fish species such as Atlantic salmon and sturgeon, and is an important migratory corridor for birds. Protecting water quality in this watershed is critical for both ecological health and human uses such as drinking water and recreation.