GUINES SE Wastewater Treatment Plant, Guînes, Hauts-de-France

GUINES SE is a wastewater treatment plant located in Guînes, a commune in the Pas-de-Calais department of Hauts-de-France, northern France. The plant serves a population of approximately 2,933 and is situated near the English Channel coast, reflecting the region's coastal and agricultural character. 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 6,133 m³/day and a current discharge volume of 523.24 m³/day, the facility operates well within its capacity, indicating robust infrastructure for current loads. The treated effluent is discharged into the local watershed, which ultimately drains into the English Channel via the coastal rivers of the region. This coastal discharge point is ecologically sensitive, as it supports diverse marine life and contributes to the overall health of the Channel ecosystem. The plant's advanced treatment helps minimize nutrient and pollutant loads, protecting downstream water quality.

The plant discharges into the local river system that flows into the English Channel, a vital marine ecosystem supporting fisheries, migratory birds, and diverse benthic habitats. The coastal zone near Guînes is part of the wider Pas-de-Calais region, where water quality is critical for both ecological balance and human activities such as tourism and fishing. Advanced treatment at this plant reduces the risk of eutrophication and contamination in the sensitive coastal environment.