SAINT ANDIOL Wastewater Treatment Plant, Saint-Andiol, France

The SAINT ANDIOL wastewater treatment plant is located in Saint-Andiol, a commune in the Bouches-du-Rhône department of Provence-Alpes-Côte d'Azur, France. The plant serves a population of approximately 3,084 people, classifying it as a small agglomeration under French regulations. The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for freshwater discharges from agglomerations of this size. With a designed capacity of 4,000 m³/day and an average daily flow of 550.18 m³/day, the facility operates well below its capacity. The treated effluent is discharged into the local watershed, which ultimately drains into the Rhône River and then the Mediterranean Sea. The plant plays a key role in protecting the water quality of the Rhône delta and the Camargue region, an ecologically sensitive area known for its wetlands and biodiversity.

The plant discharges into the local watercourse, which flows into the Rhône River and eventually reaches the Mediterranean Sea. The Rhône delta and the Camargue region downstream are ecologically significant, supporting diverse aquatic life and migratory birds. The plant's secondary treatment helps reduce nutrient loads and protect these sensitive ecosystems.