etangs Aeres parc de l erabliere Wastewater Treatment Plant, Lévis, Québec

The etangs Aeres parc de l erabliere is a secondary-level wastewater treatment plant located in the Saint-Nicolas sector of Lévis, Québec, Canada. Serving a small population of 757 residents, the plant is part of the municipal wastewater infrastructure for the Chaudière-Appalaches region. It operates under the regulatory framework of the Quebec Ministry of the Environment and the Canadian Environmental Protection Act, which set standards for effluent quality and receiving water protection. As a secondary treatment facility, the plant uses biological processes to reduce organic matter and suspended solids before discharge. Reflecting the modest scale of the community it serves. Secondary treatment is the standard for plants of this size in Canada, ensuring compliance with federal and provincial guidelines. The treated effluent is discharged into a local watercourse that ultimately drains into the St. Lawrence River, one of North America's most significant waterways. The St. Lawrence River supports diverse aquatic ecosystems and is a critical migratory corridor for fish and birds. The plant's location within 50 km of the coast but not within 10 km means its discharge contributes to the freshwater portion of the St. Lawrence estuary, which requires careful management to protect water quality and aquatic life.

The plant discharges into a tributary of the St. Lawrence River, which flows northeast into the Gulf of St. Lawrence and the Atlantic Ocean. The St. Lawrence River is a major ecological corridor supporting fish species such as Atlantic salmon and sturgeon, as well as migratory birds. The Chaudière-Appalaches region is characterized by agricultural and urban land uses, making proper wastewater treatment essential to prevent nutrient loading and protect downstream aquatic habitats.