Bassin des eaux usées de Saint-Jacques-de-Leeds - Secondary Wastewater Treatment in Québec

The Bassin des eaux usées de Saint-Jacques-de-Leeds is a municipal wastewater treatment facility located in Saint-Jacques-de-Leeds, a small community in the Chaudière-Appalaches region of Québec, Canada. The plant serves a population of 223 residents, reflecting its role in a rural setting. The plant provides secondary treatment, which is the standard biological treatment process required under Canadian federal and provincial regulations for communities of this size. In Québec, the Règlement sur les ouvrages de gestion des eaux pluviales et des eaux usées (Q-2, r. 34) governs wastewater treatment, mandating secondary treatment for discharges to sensitive environments. Indicating a modest flow consistent with the small population served. The treated effluent is discharged into a local watercourse, which ultimately drains into the Chaudière River and then into the St. Lawrence River. The St. Lawrence River is a major ecological corridor supporting diverse aquatic life, including fish species such as Atlantic sturgeon and American eel. The plant's secondary treatment helps protect downstream water quality in this important watershed.

The plant discharges into a local stream that flows into the Chaudière River, a tributary of the St. Lawrence River. The St. Lawrence River is a vast freshwater ecosystem that supports a wide range of aquatic species and serves as a critical migratory route for fish. The Chaudière River basin is characterized by agricultural and forested land uses, and the plant's secondary treatment helps mitigate nutrient and organic pollution that could otherwise impact downstream habitats.