Etangs Aeres Wastewater Treatment Plant, Rivière-Ouelle, Québec

Etangs Aeres is a municipal wastewater treatment facility located in Rivière-Ouelle, a small community in the Bas-Saint-Laurent region of Québec, Canada. The plant serves a population of 548 and operates under secondary treatment, which is standard for small agglomerations in the province. Its location along Chemin du Sud-de-la-Rivière places it in a rural, coastal setting near the St. Lawrence River. The plant provides secondary treatment, which involves biological processes to reduce organic matter and suspended solids. As a small facility in Canada, it is subject to federal and provincial regulations under the Canadian Environmental Protection Act and Québec's Environment Quality Act. These frameworks ensure that treated effluent meets standards for discharge into sensitive water bodies. The treated wastewater is discharged into the St. Lawrence River, a major waterway that flows into the Gulf of St. Lawrence and ultimately the Atlantic Ocean. This river supports diverse aquatic life, including fish species such as Atlantic salmon and sturgeon, and is an important migratory corridor for birds. The plant's operation helps protect this ecosystem from nutrient pollution and pathogens.

The plant discharges into the St. Lawrence River, which flows into the Gulf of St. Lawrence and then the Atlantic Ocean. This watershed supports a rich ecosystem, including fish like Atlantic salmon and migratory birds. The St. Lawrence River is ecologically sensitive due to its role as a critical habitat and its proximity to the marine environment.