LUMBRES SE Wastewater Treatment Plant, Lumbres, Hauts-de-France

LUMBRES SE is an advanced wastewater treatment plant located in Lumbres, a commune in the Pas-de-Calais department of Hauts-de-France, France. The plant serves a population of 5,567 and is part of the region's municipal wastewater infrastructure, ensuring compliance with French and European environmental standards. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 3,500 cubic meters per day and a reported discharge volume of 993.14 cubic meters per day, the facility operates well within its capacity. As a plant in France, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates appropriate treatment levels for agglomerations of this size. The treated effluent is discharged into the local water system, which ultimately drains into the Aa River and then into the North Sea. The plant plays a key role in protecting the Aa River's water quality, supporting aquatic life and downstream ecosystems in the region.

The plant discharges into the Aa River basin, which flows through the Hauts-de-France region before reaching the North Sea. The Aa River supports diverse aquatic habitats and is important for local biodiversity. The advanced treatment at LUMBRES SE helps reduce nutrient loading and protects the river's ecological health, particularly in a region with agricultural and industrial activities.