Etangs Aeres Wastewater Treatment Plant - Saint-Ambroise-de-Kildare, Quebec

Etangs Aeres is a municipal wastewater treatment facility located in Saint-Ambroise-de-Kildare, a small community in the Lanaudière region of Quebec, Canada. The plant serves a population of approximately 637 residents and operates under provincial environmental regulations. The plant provides secondary treatment, which is the standard biological treatment process required for small communities in Quebec. This level of treatment significantly reduces organic matter and suspended solids before discharge. The plant has a reported discharge volume of 286.00 cubic meters per day, indicating a modest scale consistent with the small population served. The treated effluent is discharged into local waterways that ultimately drain into the St. Lawrence River system. The plant plays a key role in protecting the water quality of the region's rivers and downstream ecosystems, including the St. Lawrence River, which supports diverse aquatic life and is an important migratory corridor for fish.

The plant discharges into a local tributary that flows into the L'Assomption River, a major watercourse in the Lanaudière region. The L'Assomption River eventually joins the St. Lawrence River near Montreal. The St. Lawrence River is a vital freshwater ecosystem supporting diverse fish species, including Atlantic sturgeon and American eel, and serves as a critical migratory route for aquatic life. The plant's secondary treatment helps reduce nutrient loading and protect downstream water quality in this ecologically significant watershed.