NOGARO Wastewater Treatment Plant, Nogaro, Occitanie, France

The NOGARO wastewater treatment plant is located in Nogaro, a commune in the Gers department of the Occitanie region in southwestern France. The facility serves a population of approximately 2,100 residents and is part of the municipal wastewater infrastructure for the area. The plant is situated at 162, Chemin des Lagunes, within the Cité du Midour area. As a secondary treatment plant, NOGARO employs biological processes to reduce organic matter and suspended solids in the wastewater. The plant has a designed capacity of 2,800 cubic meters per day and currently discharges an average volume of 374.64 cubic meters per day, indicating it operates well below its design capacity. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving agglomerations of this size are required to provide secondary treatment, which NOGARO meets. The treated effluent from NOGARO is discharged into the local watershed, which ultimately drains into the Midour River, a tributary of the Adour River. The Adour flows into the Bay of Biscay in the Atlantic Ocean. The plant plays a key role in protecting the water quality of the Midour and downstream ecosystems, including the Adour estuary and coastal waters.

The NOGARO plant discharges into the Midour River, which flows into the Adour River and then into the Bay of Biscay. This watershed supports diverse aquatic life and is important for regional biodiversity. The plant's secondary treatment helps reduce nutrient loading and organic pollution, protecting downstream habitats and water quality in the Adour estuary.