Etang Wastewater Treatment Plant, Saint-Narcisse, Quebec

The Etang wastewater treatment plant is located in Saint-Narcisse, a municipality in the Mauricie region of Quebec, Canada. It serves a population of approximately 1,528 residents, classifying it as a small-scale facility within the province's wastewater infrastructure. As a Canadian plant, it operates under provincial and federal regulations, including the Quebec Environment Quality Act and the Canadian Environmental Protection Act. For small communities like Saint-Narcisse, typical treatment involves primary or secondary processes to meet effluent standards before discharge. The plant discharges treated wastewater into local waterways that flow into the St. Lawrence River system. The St. Lawrence River is a major ecological corridor supporting diverse aquatic life and migratory fish species. Proper treatment helps protect downstream water quality in the St. Lawrence estuary and Gulf.

The plant's treated effluent enters local tributaries that drain into the St. Lawrence River, one of North America's largest river systems. The St. Lawrence River and its estuary support a rich ecosystem, including fish species such as Atlantic sturgeon and American eel, and serve as a critical migratory route for birds. The river ultimately flows into the Gulf of St. Lawrence, a semi-enclosed sea connected to the Atlantic Ocean.