Station d'epuration Chambly Richelieu - Chambly, Quebec Wastewater Treatment Plant

Station d'epuration Chambly Richelieu is a municipal wastewater treatment facility located in Chambly, Quebec, Canada. The plant serves a population of around 31,841 people in the La Vallée-du-Richelieu region of Montérégie. As an operational facility, it plays a key role in managing wastewater from this growing community. In Canada, wastewater treatment plants are regulated under the federal Wastewater Systems Effluent Regulations (WSER) and provincial standards set by the Ministère de l'Environnement et de la Lutte contre les changements climatiques (MELCC) in Quebec. For a plant serving a medium-sized agglomeration like Chambly, secondary treatment is typically required to meet effluent quality standards. The plant's designed capacity is 1.00 million cubic meters per day, indicating it is sized to handle the community's wastewater flows. The plant's treated effluent is discharged into the Richelieu River, a major waterway that flows north from Lake Champlain to the St. Lawrence River near Sorel-Tracy. The Richelieu River supports diverse aquatic life and is an important recreational and ecological corridor in southern Quebec. Proper treatment at this plant helps protect water quality in the river and downstream ecosystems, including the St. Lawrence River estuary.

The plant discharges treated wastewater into the Richelieu River, which flows northward to the St. Lawrence River. The Richelieu River is a key tributary supporting fish species such as walleye and yellow perch, and its watershed includes agricultural and urban areas. Downstream, the St. Lawrence River estuary is a critical habitat for migratory birds and marine life. Effective treatment at this plant helps reduce nutrient and pollutant loads, protecting these aquatic ecosystems.