SERIGNAN DU COMTAT Wastewater Treatment Plant, Sérignan-du-Comtat, France

The SERIGNAN DU COMTAT wastewater treatment plant is located in Sérignan-du-Comtat, a commune in the Vaucluse department of Provence-Alpes-Côte d'Azur, France. The plant serves a population of 2,700 and operates under the regulatory framework of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The plant provides secondary treatment, which typically involves biological processes to reduce organic matter and suspended solids. With a designed capacity of 1,850 m³/day and an actual discharge volume of 481.68 m³/day, the plant operates well below its capacity. As an inland facility, it does not discharge directly to coastal waters. The treated effluent is discharged into the local watershed, which ultimately drains into the Rhône River basin. The Rhône flows into the Mediterranean Sea, supporting diverse aquatic ecosystems along its course. The plant plays a key role in protecting local water quality and downstream environments.

The plant discharges into the local watershed within the Rhône River basin, which flows southward through Provence-Alpes-Côte d'Azur and eventually into the Mediterranean Sea. The Rhône is a major European river supporting diverse aquatic life and important migratory fish species. The plant's secondary treatment helps reduce nutrient and organic pollution, contributing to the ecological health of the river and its delta.