Beynes les plantins Wastewater Treatment Plant, Beynes, Île-de-France

Beynes les plantins is a wastewater treatment plant located in Beynes, a commune in the Yvelines department of Île-de-France, France. The facility serves a population of approximately 6,420 people, placing it in the small-to-medium agglomeration category under French and EU regulations. The plant is situated inland, away from coastal areas, and contributes to the local water management network. As a French wastewater treatment facility, Beynes les plantins 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 levels to protect receiving water bodies. The plant is expected to meet these regulatory standards. The treated effluent from Beynes les plantins is discharged into local watercourses that ultimately drain into the Seine River basin, which flows through Paris and into the English Channel. The plant plays a role in protecting the water quality of the Seine watershed, supporting aquatic ecosystems and downstream water uses.

The plant discharges into the Seine River basin, which drains a large portion of northern France and ultimately reaches the English Channel. The Seine watershed supports diverse aquatic life and is an important ecological corridor. The plant's operations help maintain water quality in this sensitive river system, which faces pressures from urban and agricultural runoff.