eTANGS AeReS ST PAULIN Wastewater Treatment Plant, Saint-Paulin, Quebec

The eTANGS AeReS ST PAULIN wastewater treatment plant is located at 3051 Chemin des Pionniers in Saint-Paulin, a municipality in the Maskinongé Regional County Municipality of Quebec's Mauricie region. The plant serves a small population of 673 residents, reflecting its role in a rural community. The facility provides secondary treatment, a standard biological process that removes organic matter and suspended solids. As a Canadian plant, it operates under provincial and federal regulations, including the Quebec Environment Quality Act and the Canadian Environmental Protection Act, which set effluent quality standards to protect receiving waters. The treated wastewater is discharged into local water bodies that drain into the Saint Lawrence River system, ultimately reaching the Atlantic Ocean. The plant's operation helps safeguard the ecological integrity of the region's streams and rivers, which support aquatic life and recreational activities.

The plant discharges into the Saint Lawrence River watershed, which flows northeast through Quebec and into the Gulf of Saint Lawrence, a major estuary and marine environment. The receiving waters support diverse fish species, including Atlantic salmon and sturgeon, and are important for migratory birds. The plant's secondary treatment reduces nutrient and organic loads, helping to prevent eutrophication in downstream lakes and coastal zones.