SAINT MAGNE DE CASTILLON Wastewater Treatment Plant - Saint-Magne-de-Castillon, Nouvelle-Aquitaine

The SAINT MAGNE DE CASTILLON wastewater treatment plant is located in Saint-Magne-de-Castillon, a commune in the Gironde department of Nouvelle-Aquitaine, southwestern France. The plant serves a population of about 5,619, classifying it as a small to medium agglomeration under EU classification. As a French wastewater facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size discharging into freshwater. The directive also mandates appropriate treatment to protect the receiving environment, particularly in sensitive areas. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Dordogne River and then the Gironde estuary, a major ecological corridor in the region. The estuary supports diverse aquatic life and is an important migratory route for fish species such as salmon and eels.

The plant discharges into the Dordogne River basin, which flows into the Gironde estuary, the largest estuary in western Europe. This estuary is a critical habitat for migratory fish and supports a rich ecosystem of birds and marine life. The watershed is also used for agriculture and recreation, making effective wastewater treatment essential for water quality and ecological health.