TRACY LE MONT Wastewater Treatment Plant, Tracy-le-Mont, Hauts-de-France

TRACY LE MONT is an advanced wastewater treatment plant located in Tracy-le-Mont, a commune in the Oise department of Hauts-de-France, France. The plant serves a population of approximately 3,103 people, classifying it as a small agglomeration under French and EU regulations. It is situated inland, away from coastal areas, and operates within the Seine-Normandy river basin. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 3,000 m³/day and a current discharge volume of 553.57 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The facility is part of France's extensive wastewater infrastructure managed by local authorities. The treated effluent is discharged into local watercourses that ultimately drain into the Oise River, a major tributary of the Seine. The Seine River flows through Paris and into the English Channel, supporting diverse aquatic ecosystems and providing water for agriculture and industry. The plant's advanced treatment helps protect downstream water quality and the ecological health of the Seine basin.

The plant discharges into local streams that feed the Oise River, a key tributary of the Seine. The Seine basin is ecologically significant, supporting fish species like Atlantic salmon and European eel, and providing habitat for migratory birds. The advanced treatment at TRACY LE MONT reduces nutrient loads, helping to prevent eutrophication in downstream waters, including the Seine estuary and the English Channel.