Station d'épuration Beauharnois - Municipal Wastewater Treatment in Beauharnois, Québec

Station d'épuration Beauharnois is a municipal wastewater treatment facility located in the industrial park of Beauharnois, Québec, Canada. The plant serves a population of about 7,636 residents in the Beauharnois-Salaberry region, operating as part of the province's wastewater infrastructure. As a small-scale agglomeration, the plant is subject to Québec's environmental regulations, which align with Canada's federal wastewater standards. These regulations require secondary treatment for facilities of this size to protect receiving water bodies. The plant's operational status is confirmed, ensuring ongoing treatment of municipal wastewater. The treated effluent from the plant is discharged into the local watershed, which ultimately drains into the St. Lawrence River via the Beauharnois Canal. The St. Lawrence River is a major waterway that supports diverse aquatic ecosystems and provides drinking water for millions. The plant plays a key role in maintaining water quality in this ecologically significant river system.

The plant discharges into the Beauharnois Canal, which connects to the St. Lawrence River, one of North America's largest and most ecologically important rivers. The St. Lawrence River supports a wide range of aquatic life, including fish species such as sturgeon and walleye, and serves as a migratory corridor for birds. The downstream environment includes the St. Lawrence Estuary and Gulf, which are critical habitats for marine mammals and fisheries. Protecting water quality in this watershed is essential for both ecological health and human use.