Usine d epuration - Cowansville, Quebec Wastewater Treatment Plant

Usine d epuration is a municipal wastewater treatment facility located at 200 Rue des Prés-Verts in Cowansville, Quebec, Canada. Serving a population of around 11,106, the plant is part of the region's essential water infrastructure, handling domestic wastewater from the community. The plant is operational and contributes to local sanitation and environmental protection. As a Canadian facility, the plant operates under federal and provincial regulations, including the Canadian Environmental Protection Act and Quebec's Environment Quality Act. For agglomerations of this size, secondary treatment is typically required to reduce organic matter and suspended solids before discharge. The plant's designed capacity is 1.00 million liters per day, indicating it is sized for the community's needs. The treated effluent from the plant is discharged into local waterways that eventually drain into the Yamaska River, which flows into the St. Lawrence River and ultimately the Atlantic Ocean. The plant helps protect the Yamaska River watershed from nutrient pollution and pathogens, supporting aquatic life and downstream water quality in the St. Lawrence ecosystem.

The plant discharges into the Yamaska River basin, a tributary of the St. Lawrence River. The Yamaska River flows through agricultural and urban areas before reaching the St. Lawrence, which empties into the Gulf of St. Lawrence and the Atlantic Ocean. The watershed supports diverse aquatic species and is important for migratory birds. Effective treatment at this plant helps reduce nutrient loading and protects downstream ecosystems from eutrophication.