BOURG SUR GIRONDE Wastewater Treatment Plant - Bourg, Nouvelle-Aquitaine, France

BOURG SUR GIRONDE is an advanced wastewater treatment plant located in Bourg, within the Gironde department of Nouvelle-Aquitaine, France. The facility serves a population of approximately 3,900 residents and has a designed capacity of 4,000 cubic meters per day, with an average discharge volume of about 696 cubic meters per day. As an advanced treatment plant, it 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 between 2,000 and 10,000 population equivalent are required to provide secondary treatment, but advanced treatment is often implemented in sensitive areas or to protect coastal waters. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Gironde estuary, one of Europe's largest estuaries. This estuary supports diverse aquatic life and is an important migratory corridor for fish species. The advanced treatment helps protect the ecological balance of this sensitive coastal environment.

The plant discharges into the Gironde estuary, a major tidal estuary on the Atlantic coast of France. This estuary is a critical habitat for migratory fish such as salmon and eels, and supports extensive bird populations. The advanced treatment level helps minimize nutrient loading and protects water quality in this ecologically sensitive area, which is influenced by both freshwater inflows and marine tides.