LABRUGUIERE Ville Wastewater Treatment Plant, Castres, Occitanie

LABRUGUIERE Ville is a municipal wastewater treatment plant located in Castres, within the Occitanie region of southern France. The facility serves a population of approximately 3,820 residents and is designed to handle a capacity of 5,000 cubic meters per day, with an average daily discharge of 681.48 cubic meters. The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids, ensuring compliance with European effluent standards before discharge. The treated effluent is released into the local watershed, which ultimately drains into the Tarn River and then the Garonne River, flowing toward the Atlantic Ocean. The plant plays a key role in protecting the water quality of these rivers and supporting the ecological health of the downstream environment.

The plant discharges into the Tarn River basin, a tributary of the Garonne River, which flows into the Gironde estuary and the Atlantic Ocean. The Tarn River supports diverse aquatic life and is important for regional biodiversity. The secondary treatment provided by the plant helps reduce nutrient and organic pollution, mitigating eutrophication risks in downstream waters.