VIGNACOURT SE Wastewater Treatment Plant, Vignacourt, Hauts-de-France

VIGNACOURT SE is an advanced wastewater treatment plant located in Vignacourt, within the Somme department of Hauts-de-France, France. The facility serves a population of approximately 2,326 residents, classifying it as a small agglomeration under French and EU regulations. It is situated inland, away from coastal areas, and its operations are part of the region's municipal wastewater infrastructure. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 2,500 cubic meters per day and a reported discharge volume of 414.95 cubic meters per day, the facility operates well within its capacity, ensuring effective treatment of incoming wastewater. The treated effluent is discharged into the local watershed, which ultimately drains into the Somme River and then into the English Channel. The plant plays a key role in protecting the water quality of the Somme basin, supporting aquatic life and downstream ecosystems. Its advanced treatment level helps minimize nutrient and pollutant loads, contributing to the ecological health of the region.

The plant discharges into the Somme River basin, which flows through the Hauts-de-France region before reaching the English Channel. The Somme River supports diverse aquatic habitats and is an important corridor for migratory fish species. The advanced treatment provided by the plant helps reduce nutrient enrichment and protects downstream water quality in this ecologically sensitive watershed.