etangs aeres Terrebonne Wastewater Treatment Plant, Terrebonne, Quebec

The etangs aeres Terrebonne wastewater treatment plant is located in Terrebonne, Quebec, Canada, serving a population of approximately 93,667. The facility is operational and plays a key role in managing municipal wastewater for this growing community within the Lanaudière region. As a plant serving a medium-to-large agglomeration, it operates under Canada's federal and provincial wastewater regulations, which require secondary treatment or equivalent for facilities of this scale. The treatment process typically involves aerated lagoons, as indicated by the plant's name, which provide biological treatment through natural and mechanical aeration. The treated effluent is discharged into the local watershed, which ultimately drains into the St. Lawrence River, a major waterway that flows into the Gulf of St. Lawrence and the Atlantic Ocean. The plant's operations help protect downstream aquatic ecosystems and support water quality in the region.

The plant discharges into the local watershed that feeds the St. Lawrence River, one of the largest rivers in North America. The St. Lawrence River supports diverse aquatic life, including fish species such as Atlantic salmon and sturgeon, and provides critical habitat for migratory birds. Downstream, the river flows into the Gulf of St. Lawrence, a productive marine ecosystem that sustains fisheries and marine mammals. Protecting water quality in this watershed is essential for ecological health and human use.