ST PAUL LES DAX 2 Wastewater Treatment Plant, Saint-Paul-lès-Dax, Nouvelle-Aquitaine

ST PAUL LES DAX 2 is a municipal wastewater treatment plant located in Saint-Paul-lès-Dax, a commune in the Landes department of Nouvelle-Aquitaine, southwestern France. The plant serves a population of approximately 6,950 residents, placing it in the small-to-medium agglomeration category under EU classification. As a French facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size discharging into freshwater. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Adour River basin. The Adour River flows westward through the Landes region and into the Bay of Biscay (Atlantic Ocean). The downstream environment supports diverse aquatic life and is part of a region known for its wetlands and coastal ecosystems.

The plant discharges into the Adour River basin, which flows through the Landes region and empties into the Bay of Biscay. This coastal area supports important estuarine and marine habitats, including nursery grounds for fish and migratory bird routes. The watershed is ecologically sensitive due to its proximity to the Atlantic coast and the presence of protected dunes and forests.