LANGEAIS Le Port Wastewater Treatment Plant, Langeais, France

LANGEAIS Le Port is an advanced wastewater treatment plant located in Langeais, in the Centre-Val de Loire region of France. The facility serves a population of around 5,346 and has a designed capacity of 5,400 cubic meters per day, with a reported discharge volume of 953.72 cubic meters. It is situated near the Loire River, one of France's major waterways. As an advanced treatment plant, it goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, which is typical for plants discharging into sensitive water bodies. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations of this size (5,000-10,000 population equivalent) are required to provide secondary treatment, but advanced treatment may be mandated if the receiving waters are sensitive to eutrophication. The plant discharges into the Loire River, which flows westward through the Loire Valley, a UNESCO World Heritage site, and eventually into the Atlantic Ocean. The Loire River supports diverse aquatic life and is an important ecological corridor. The plant's advanced treatment helps protect water quality in this ecologically significant river system.

The plant discharges into the Loire River, which flows through the Loire Valley and drains into the Bay of Biscay (Atlantic Ocean). The Loire is a major European river known for its biodiversity, including migratory fish species such as Atlantic salmon and European eel. Advanced treatment at this plant helps reduce nutrient loading, which is critical for preventing eutrophication in the river and its estuary.