Bassins d'epuration Dolbeau Wastewater Treatment Plant, Dolbeau-Mistassini, Quebec

Bassins d'epuration Dolbeau is a municipal wastewater treatment plant located in Dolbeau-Mistassini, Quebec, Canada. The facility serves a population of approximately 8,300 residents and is situated inland near the Saguenay-Lac-Saint-Jean region. It operates under the regulatory framework of the Canadian Environmental Protection Act and provincial Quebec regulations. As a plant serving a medium-sized agglomeration, it is expected to meet secondary treatment standards under Canadian federal guidelines. The plant has a designed capacity of 1.00 million cubic meters per day, indicating it is sized to handle the community's wastewater flows. Typical plants in this region employ biological treatment followed by disinfection. The plant discharges treated effluent into a local watercourse that ultimately drains into the Saguenay River and then into the St. Lawrence Estuary. This estuary is a critical habitat for diverse aquatic species and supports important fisheries. The plant's operations help protect downstream water quality and the ecological health of the Saguenay River system.

The plant discharges into a local watercourse that flows into the Saguenay River, a major tributary of the St. Lawrence Estuary. The estuary is a biologically productive zone supporting migratory fish, marine mammals, and diverse bird populations. The plant's treatment helps maintain water quality in this ecologically sensitive region, which is important for both local biodiversity and downstream communities.