Etangs aeres de Saint Jean de Dieu Wastewater Treatment Plant, Saint-Jean-de-Dieu, Quebec

Etangs aeres de Saint Jean de Dieu is a municipal wastewater treatment facility located in Saint-Jean-de-Dieu, Quebec, Canada. The plant serves a small population of 1,273 residents in the Bas-Saint-Laurent region, providing secondary treatment to protect local water quality. The plant operates under Canada's federal wastewater regulations, which require secondary treatment for inland facilities. As a small agglomeration, it meets the national standards for effluent quality. The treatment process uses aerated lagoons, a common technology for small communities in cold climates. The treated effluent is discharged into the local watershed, which ultimately drains into the St. Lawrence River via the Bas-Saint-Laurent region. This area supports diverse aquatic life and is important for migratory birds. The plant's operation helps maintain the ecological health of downstream water bodies.

The plant discharges into the local watershed within the Bas-Saint-Laurent region of Quebec, which flows into the St. Lawrence River. The St. Lawrence River is a major waterway that empties into the Gulf of St. Lawrence, supporting a rich ecosystem including fish species like Atlantic salmon and sturgeon. The area is ecologically sensitive, with wetlands and coastal habitats that rely on good water quality.