Lectoure Wastewater Treatment Plant - Occitanie, France

The Lectoure wastewater treatment plant is located in the commune of Lectoure, within the Gers department of the Occitanie region in southwestern France. It serves a population of approximately 3,400 residents, classifying it as a small agglomeration under French and EU regulations. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 6,000 m³/day and an average daily discharge of 606.55 m³/day, the facility operates well below its capacity, ensuring effective treatment. The treated effluent is discharged into the local watershed, which ultimately drains into the Garonne River basin and then to the Atlantic Ocean via the Gironde estuary. The plant plays a key role in protecting the region's water quality, supporting both aquatic ecosystems and downstream agricultural water use.

The plant discharges into the Gers River, a tributary of the Garonne River, which flows into the Gironde estuary and the Atlantic Ocean. This watershed supports diverse aquatic life and is important for regional agriculture. Advanced treatment helps minimize nutrient loading, protecting downstream water quality in the ecologically sensitive Garonne basin.