CHALON SUR SAONE Port Barois Wastewater Treatment Plant, Saint-Rémy, France

CHALON SUR SAONE Port Barois is a wastewater treatment plant located in Saint-Rémy, near Chalon-sur-Saône, in the Bourgogne-Franche-Comté region of France. The plant serves a population of approximately 83,671, classifying it as a medium-to-large agglomeration under French and EU regulations. As a facility of this scale in France, the plant is expected to meet the requirements of the EU Urban Waste Water Treatment Directive (91/271/EEC). This directive mandates secondary treatment for agglomerations of this size, and often tertiary treatment if the receiving waters are sensitive. The plant's treatment processes are designed to comply with national standards set by the French Ministry of Ecology. The treated effluent is discharged into the Saône River, a major tributary of the Rhône, which flows south to the Mediterranean Sea. The plant plays a key role in protecting the Saône's water quality and the downstream ecosystems, including the Camargue delta and the Gulf of Lion.

The plant discharges into the Saône River, which flows into the Rhône River and ultimately reaches the Mediterranean Sea. The Saône-Rhône corridor supports diverse aquatic life and is an important migratory route for fish. The downstream environment includes ecologically sensitive areas such as the Camargue wetlands, which rely on good water quality from upstream sources.