Port Saint Louis du Rhone Wastewater Treatment Plant, Port-Saint-Louis-du-Rhône, France

The Port Saint Louis du Rhone wastewater treatment plant is located in Port-Saint-Louis-du-Rhône, a commune in the Bouches-du-Rhône department of the Provence-Alpes-Côte d'Azur region in southern France. The plant serves a population of approximately 17,964 people, making it a medium-sized agglomeration under French and EU regulations. As a French wastewater facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The plant's designed capacity is 1.00, and it is situated near the Rhône River delta, an ecologically significant area. The plant's treated effluent is discharged into the Rhône River, which flows into the Mediterranean Sea via the Camargue delta. This region supports diverse aquatic life and is an important migratory corridor for birds. The plant's proximity to the coast (within 50 km) underscores the need for effective treatment to protect marine water quality.

The plant discharges into the Rhône River, which flows through the Camargue delta into the Mediterranean Sea. The Camargue is a vast wetland complex that supports diverse aquatic life, including flamingos and other waterbirds, and serves as a critical stopover for migratory species. Protecting water quality in this region is essential for maintaining the ecological health of the delta and the adjacent marine environment.