SIN LE NOBLE Wastewater Treatment Plant, Sin-le-Noble, Hauts-de-France

The SIN LE NOBLE wastewater treatment plant is located in Sin-le-Noble, a commune in the Nord department of Hauts-de-France, France. The facility serves a population of approximately 22,000 people, classifying it as a medium-sized agglomeration under EU classification. It is situated in the urban area of Douai, within the industrial and agricultural region of northern France. As a plant operating under the EU Urban Waste Water Treatment Directive (91/271/EEC), SIN LE NOBLE is required to meet secondary treatment standards for its population size. The directive mandates that agglomerations with a population equivalent (PE) between 10,000 and 150,000 must have secondary treatment, with tertiary treatment required if discharging into sensitive areas. It operates within the French regulatory framework overseen by the Agence de l'Eau Artois-Picardie. The treated effluent from the plant is discharged into the local water system, which ultimately drains into the Scarpe River. The Scarpe flows through the Douai region and joins the Escaut (Scheldt) River, which continues through Belgium and into the North Sea. This river system supports diverse aquatic life and is an important ecological corridor in the region. The plant plays a key role in protecting water quality in this densely populated and industrialized area.

The SIN LE NOBLE plant discharges into the Scarpe River, a tributary of the Escaut (Scheldt) River. The Escaut flows through France, Belgium, and the Netherlands before reaching the North Sea. This watershed supports a variety of fish species and aquatic habitats, and is influenced by agricultural runoff and industrial activities in the region. The plant's treatment helps reduce nutrient loading and organic pollution, contributing to the ecological health of the downstream river system and the North Sea coastal zone.