Etangs Aeres St Pascal Wastewater Treatment Plant, Saint-Pascal, Quebec

Etangs Aeres St Pascal is a municipal wastewater treatment plant located in Saint-Pascal, Quebec, Canada, within the Bas-Saint-Laurent region. The plant serves a population of approximately 3,187 residents and is situated near the Kamouraska area, reflecting the scale of a small agglomeration under Canadian wastewater management frameworks. As a small-scale facility, the plant is expected to meet provincial and federal treatment standards under the Canadian Environmental Protection Act and Quebec's Regulation respecting municipal wastewater treatment works. Plants of this size typically employ lagoon-based or mechanical treatment systems to achieve secondary treatment levels, ensuring compliance with effluent quality standards. The plant discharges into the local watershed, which ultimately drains into the St. Lawrence River estuary, a critical ecological zone supporting diverse aquatic life and migratory bird populations. The proximity to the coast (within 50 km) underscores the importance of effective treatment to protect downstream marine environments and maintain water quality in the St. Lawrence River system.

The plant's treated effluent enters the local drainage network, which flows into the St. Lawrence River estuary near the Kamouraska region. This estuary is a biologically productive zone that supports fish species such as Atlantic sturgeon and serves as a vital stopover for migratory birds along the Atlantic Flyway. The plant's location within 50 km of the coast means its discharge can influence nearshore water quality, making consistent treatment important for preserving the ecological health of the St. Lawrence River and its downstream marine environment.