Station d'epuration Saint Janvier - Mirabel, Quebec Wastewater Treatment Plant

Station d'epuration Saint Janvier is a municipal wastewater treatment plant located in the Saint-Janvier district of Mirabel, Quebec, Canada. The plant serves a population of approximately 14,101 people, placing it in the small-to-medium agglomeration category for Canadian wastewater infrastructure. As a Canadian facility, the plant operates under provincial regulations enforced by the Ministère de l'Environnement et de la Lutte contre les changements climatiques (MELCC). For communities of this size, secondary treatment is typically required to meet effluent quality standards before discharge. It is expected to comply with Quebec's wastewater regulations. The plant discharges treated effluent into the local watershed, which ultimately drains into the Rivière des Mille Îles and then the St. Lawrence River. The St. Lawrence River is a major waterway supporting diverse aquatic life and providing drinking water for millions. The plant plays a key role in protecting this downstream ecosystem from untreated sewage.

The plant's treated effluent flows into the Rivière des Mille Îles, a tributary of the St. Lawrence River. The St. Lawrence River is a critical freshwater resource that supports a wide range of aquatic species and serves as a migratory corridor for fish. Protecting water quality in this basin is essential for maintaining ecological balance and human use downstream.