PARGNY SUR SAULX Wastewater Treatment Plant, Étrepy, Grand Est

PARGNY SUR SAULX is an advanced wastewater treatment plant located in Étrepy, in the Grand Est region of France. The plant serves a population of approximately 3,146 people and is part of the municipal wastewater infrastructure for the area. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. Its designed capacity is 2,500 m³/day, and it currently discharges 561.24 m³/day of treated effluent. As a French facility, it operates under 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 Marne River and then the Seine River, flowing towards the English Channel. The plant plays a key role in protecting the water quality of these rivers and the downstream environment.

The plant discharges into the local water system that feeds the Marne River, a major tributary of the Seine. The Seine basin supports diverse aquatic life and is an important ecological corridor in northern France. Advanced treatment helps reduce nutrient loading, which is critical for preventing eutrophication in the Seine estuary and the English Channel.