RIEZ Wastewater Treatment Plant, Riez, Provence-Alpes-Côte d'Azur, France

RIEZ is a wastewater treatment plant located in Riez, a commune in the Alpes-de-Haute-Provence department of the Provence-Alpes-Côte d'Azur region, France. The plant serves a population of 2,750 and is part of the municipal wastewater infrastructure for the area. It is situated inland, away from coastal zones, and treats wastewater from the local community. The plant employs advanced treatment processes, ensuring a high level of pollutant removal. It has a designed capacity of 6,000 m³/day and currently discharges 490.60 m³/day of treated effluent. As a French facility, it operates under the national regulations transposing the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for agglomerations of this size. The treated effluent is discharged into the local watershed, which ultimately drains into the Durance River, a major tributary of the Rhône. The Rhône flows into the Mediterranean Sea. The plant's advanced treatment helps protect the water quality of these downstream water bodies and supports the ecological health of the region.

The plant discharges into the local watershed that feeds the Durance River, a key tributary of the Rhône River. The Rhône flows into the Mediterranean Sea, supporting diverse aquatic life and important migratory corridors. The advanced treatment level helps minimize nutrient and pollutant loads, protecting the ecological balance of these water bodies.