Etang Aere Wastewater Treatment Plant, Saint-Siméon, Québec

Etang Aere is a municipal wastewater treatment plant located in Saint-Siméon, within the Charlevoix-Est region of Québec, Canada. The facility serves a small community of approximately 968 residents and operates under secondary treatment standards, which is typical for smaller agglomerations in the province. As a secondary treatment plant, Etang Aere uses biological processes to reduce organic matter and suspended solids before discharge. The plant's discharge volume is reported at 990 cubic meters per day, reflecting the scale of the community it serves. In Québec, such facilities are regulated under provincial environmental laws and must comply with effluent quality standards set by the Ministère de l'Environnement et de la Lutte contre les changements climatiques. The treated wastewater is discharged into the St. Lawrence River watershed, a major waterway that flows into the Gulf of St. Lawrence and ultimately the Atlantic Ocean. The plant's proximity to the coast (within 10 km) means its discharge can influence local marine and estuarine ecosystems. Proper treatment is essential to protect water quality in this ecologically sensitive region, which supports diverse aquatic life and migratory bird populations.

The plant discharges into the St. Lawrence River system, which drains into the Gulf of St. Lawrence and the Atlantic Ocean. This coastal area supports rich marine biodiversity, including fish stocks and migratory waterfowl. Secondary treatment helps reduce nutrient loading and organic pollution, which is critical for maintaining the ecological health of the downstream estuary and coastal waters.