MOY DE L AISNE Wastewater Treatment Plant, Brissay-Choigny, Hauts-de-France

MOY DE L AISNE is a wastewater treatment plant located in Brissay-Choigny, in the Hauts-de-France region of northern France. The plant serves a small community of approximately 1,050 residents, reflecting its role in managing local domestic wastewater within the Aisne department. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive for agglomerations of this size. With a designed capacity of 3,000 m³/day and a current discharge volume of 187.32 m³/day, the facility has ample capacity for future growth. It operates under France's national water law, which implements EU directives and sets strict effluent standards for sensitive areas. The treated effluent is discharged into local waterways that ultimately drain into the Oise River, a major tributary of the Seine. The Seine basin supports diverse aquatic ecosystems and provides drinking water for millions. Advanced treatment helps protect these downstream environments from nutrient pollution and other contaminants.

The plant discharges into the local hydrographic network that feeds the Oise River, a key tributary of the Seine. The Seine basin is ecologically sensitive, supporting diverse fish populations and serving as a migratory corridor for species like eels. Advanced treatment reduces nutrient loads, helping to prevent eutrophication in downstream estuaries and coastal zones.