Sanguinet2 Wastewater Treatment Plant, Sanguinet, Nouvelle-Aquitaine, France

Sanguinet2 is a wastewater treatment plant serving the commune of Sanguinet in the Landes department of Nouvelle-Aquitaine, southwestern France. The plant is situated in a rural area near the Atlantic coast, within 50 km of the ocean, and serves a population of approximately 6,700 people. As a French facility, it operates under the national transposition of the EU Urban Waste Water Treatment Directive (91/271/EEC), which sets treatment standards based on population size and receiving water sensitivity. For a plant serving around 6,700 people, the EU directive typically requires secondary treatment (biological treatment) as a minimum. The designed capacity of 1.00 (likely in thousands of cubic meters per day or population equivalent) suggests a modest scale. French regulations mandate compliance with national standards for effluent quality. The treated wastewater from Sanguinet2 is discharged into the local hydrological network, which ultimately drains into the Atlantic Ocean via the coastal lakes and rivers of the Landes region. The area is characterized by the Landes forest and a chain of coastal lakes, including the nearby Étang de Cazaux et de Sanguinet. The plant plays a role in protecting these sensitive aquatic ecosystems from nutrient pollution and other contaminants.

The Sanguinet2 plant discharges into the watershed of the Étang de Cazaux et de Sanguinet, a coastal lake connected to the Atlantic Ocean via the Canal des Landes. This lake is part of a chain of coastal lakes in the Landes region, which support diverse aquatic life and are important for migratory birds. The downstream environment includes the Bay of Biscay, where nutrient inputs can contribute to eutrophication. The plant's location within 50 km of the coast underscores the need for effective treatment to protect marine and coastal ecosystems.