Morcenx Lange Wastewater Treatment Plant, Morcenx-la-Nouvelle, France

Morcenx Lange is an advanced wastewater treatment plant located in Morcenx-la-Nouvelle, within the Landes department of Nouvelle-Aquitaine, France. The facility serves a population of approximately 3,500 and has a designed capacity of 5,200 cubic meters per day, with an average discharge volume of 624.39 cubic meters per day. As an advanced treatment plant, Morcenx Lange goes beyond secondary treatment to remove nutrients and other pollutants, meeting stringent French and EU standards. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving agglomerations of this size are required to provide secondary treatment, but the advanced level here indicates a higher environmental commitment, likely due to sensitive receiving waters. The plant's treated effluent is discharged into local watercourses that drain into the Adour River basin, eventually reaching the Bay of Biscay. The surrounding region features diverse aquatic habitats and supports migratory fish species, making advanced treatment important for protecting downstream ecosystems.

The plant discharges into local streams that flow into the Adour River, which empties into the Bay of Biscay on the Atlantic coast. The Adour basin supports diverse aquatic life, including migratory fish such as salmon and eels. Advanced treatment helps minimize nutrient loading and protects these ecologically sensitive waters.