Lagune de la rue Boucher Wastewater Treatment Plant, Ville de Caraquet, New Brunswick

Lagune de la rue Boucher is a municipal wastewater treatment plant located in Ville de Caraquet, New Brunswick, Canada. It serves a small community of approximately 950 residents, reflecting the rural character of the Acadian Peninsula region. The plant provides secondary treatment, which is the standard biological treatment level for Canadian municipal wastewater facilities. Under the federal Wastewater Systems Effluent Regulations (WSER), secondary treatment is required for all systems discharging to surface waters, ensuring removal of organic matter and suspended solids. The plant discharges an average of 500.60 cubic meters per day of treated effluent. The treated effluent is discharged into the local watershed, which ultimately drains into the Gulf of St. Lawrence. The receiving environment supports diverse aquatic life and is part of a region known for its coastal ecosystems, including estuaries and salt marshes that provide important habitat for fish and migratory birds.

The plant's treated effluent enters the Caraquet River system, which flows into Caraquet Bay and then into the Gulf of St. Lawrence. This coastal region supports a mix of marine and estuarine habitats, including eelgrass beds and soft-bottom communities that are important for fish species such as Atlantic salmon and gaspereau. The Gulf of St. Lawrence is a major marine ecosystem that sustains commercial fisheries and marine mammals.