DAX COMMUNALE Wastewater Treatment Plant, Dax, Nouvelle-Aquitaine

DAX COMMUNALE is a municipal wastewater treatment plant located in Dax, within the Nouvelle-Aquitaine region of southwestern France. The plant serves a population of 15,400 and is situated near the Adour River, which flows through the city. As a facility in the European Union, it is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which sets standards for collection and treatment based on agglomeration size. Under EU regulations, agglomerations with a population equivalent between 10,000 and 150,000 typically require secondary treatment as a minimum standard. French wastewater facilities are regulated by the Ministry of Ecological Transition and local water agencies. Treated effluent from DAX COMMUNALE is discharged into the Adour River, which flows westward through the Landes region and into the Bay of Biscay. The Adour River supports diverse aquatic life and is an important ecological corridor for migratory fish species. The plant's location inland, approximately 50 km from the coast, reduces direct marine impact but still influences the river's water quality downstream.

DAX COMMUNALE discharges treated wastewater into the Adour River, which flows through the Landes region and empties into the Bay of Biscay. The Adour River basin supports diverse aquatic ecosystems, including habitats for migratory fish such as salmon and eels. The plant's inland location, about 50 km from the coast, means its effluent affects freshwater habitats before reaching the marine environment. The river's water quality is important for both ecological health and downstream uses, including agriculture and recreation.