BORDEAUX CLOS DE HILDE Wastewater Treatment Plant, Bègles, Nouvelle-Aquitaine

BORDEAUX CLOS DE HILDE is a wastewater treatment plant located in Bègles, a suburb of Bordeaux in the Nouvelle-Aquitaine region of southwestern France. The plant serves a population equivalent of 248,450, classifying it as a large agglomeration under European Union regulations. As a facility of this scale, it is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment as a minimum, with tertiary treatment required if the receiving waters are designated as sensitive areas. The plant's designed capacity is 1.00 (likely in cubic meters per day or similar unit), indicating its infrastructure is sized to handle the influent load from the urban area. The treated effluent is discharged into the Garonne River, which flows through Bordeaux and eventually into the Gironde estuary and the Atlantic Ocean. This river is ecologically significant, supporting diverse aquatic life and serving as a migratory corridor for fish species such as salmon and eels. The plant's performance is critical to maintaining water quality in the Garonne and the downstream estuary.

The plant discharges into the Garonne River, which flows through the Bordeaux metropolitan area and into the Gironde estuary, the largest estuary in Europe. The estuary is a vital ecosystem for migratory birds and fish, including the European sturgeon. The Garonne's water quality is influenced by urban runoff and agricultural inputs, making the plant's treatment essential for protecting downstream habitats and recreational uses.