Overview
SAINT POL SUR TERNOISE Gauchin is a wastewater treatment plant in Gauchin-Verloingt, Hauts-de-France, France, serving approximately 5,850 people. It operates under the EU Urban Waste Water Treatment Directive.
SAINT POL SUR TERNOISE Gauchin is a wastewater treatment plant located in Gauchin-Verloingt, a commune in the Pas-de-Calais department of Hauts-de-France, northern France. The plant serves a population of approximately 5,850 people, placing it in the small-to-medium agglomeration category under French and EU regulations. As a plant serving fewer than 10,000 people, it falls under the requirements of the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates appropriate treatment for discharges into freshwater or estuarine environments. French plants of this scale typically employ secondary biological treatment or equivalent to meet national water quality standards. The plant discharges into the local water system, which ultimately drains into the Ternoise River, a tributary of the Canche River. The Canche flows into the English Channel near Étaples, supporting diverse aquatic life and estuarine habitats. The plant plays a key role in protecting the Ternoise watershed from nutrient pollution and maintaining water quality for downstream ecosystems.
Environmental context
The plant discharges into the Ternoise River, which flows into the Canche River and then into the English Channel. The Canche estuary is an ecologically sensitive area that supports migratory birds and diverse aquatic species. The plant's operations help reduce nutrient loading and protect the downstream marine environment from eutrophication.
Frequently asked questions
The plant is located at Rue du Marais, Gauchin-Verloingt, in the Pas-de-Calais department of Hauts-de-France, France.
The plant serves approximately 5,850 people, classifying it as a small-to-medium agglomeration under EU regulations.
The plant discharges treated effluent into the local water system, which flows into the Ternoise River, a tributary of the Canche River, and eventually into the English Channel.
As a French plant serving fewer than 10,000 people, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for discharges into freshwater environments.
Plants of this scale in France typically employ secondary biological treatment, such as activated sludge or biofiltration, to meet national standards for organic matter and nutrient removal.
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