Station D epuration des eaux usees - Saint-Roch-de-l'Achigan, Quebec Secondary Wastewater Treatment Plant

Station D epuration des eaux usees is a municipal wastewater treatment plant located in Saint-Roch-de-l'Achigan, Quebec, Canada. The facility serves a small community of 2,074 residents and operates under secondary treatment standards, ensuring effective removal of organic matter and suspended solids. As a secondary treatment plant, it meets the regulatory requirements set by the Canadian Council of Ministers of the Environment (CCME) for wastewater systems serving small populations. The plant's discharge volume of 931 cubic meters per day reflects its scale, and it operates under provincial permits issued by the Quebec Ministry of the Environment. The treated effluent is discharged into local waterways that ultimately drain into the St. Lawrence River, a major ecological corridor supporting diverse aquatic life. The plant plays a key role in protecting downstream water quality and the broader St. Lawrence ecosystem.

The plant discharges into a local tributary of the St. Lawrence River, which flows into the Gulf of St. Lawrence and the Atlantic Ocean. The St. Lawrence River is a vital freshwater resource supporting fish species such as Atlantic salmon and lake sturgeon, and its estuary provides critical habitat for migratory birds. The plant's secondary treatment helps reduce nutrient loading and protects downstream water quality.