Etangs Aeres Secteur Saint Malachie Wastewater Treatment Plant, Saint-Malachie, Quebec

Etangs Aeres Secteur Saint Malachie is a municipal wastewater treatment plant located in Saint-Malachie, Quebec, Canada. It serves a small population of 1,102 residents, reflecting its role in a rural community within the Chaudière-Appalaches region. The plant is operational and provides secondary treatment, which is a standard level for small agglomerations in Canada. As a secondary treatment facility, the plant uses biological processes to reduce organic matter and suspended solids. Under Canadian federal and provincial regulations, such plants must meet effluent quality standards to protect receiving waters. The plant's discharge volume is 494.90 cubic meters per day, indicating its scale relative to the population served. The plant discharges into the local watershed, which ultimately drains into the St. Lawrence River via the Chaudière River system. This river is a major tributary of the St. Lawrence, supporting diverse aquatic life and providing habitat for fish species. The plant's operation helps maintain water quality in this ecologically important region.

The plant discharges into the Chaudière River basin, which flows northward into the St. Lawrence River, a major waterway that empties into the Gulf of St. Lawrence and the Atlantic Ocean. The Chaudière River supports a variety of fish species and is part of a broader ecosystem that includes wetlands and riparian habitats. The plant's secondary treatment helps reduce nutrient loading and organic pollution, protecting downstream water quality.