NONTRON Intercommunale Wastewater Treatment Plant, Saint-Martial-de-Valette, France

NONTRON Intercommunale is a wastewater treatment plant located in Saint-Martial-de-Valette, near Nontron in the Dordogne department of Nouvelle-Aquitaine, France. The plant serves a population of approximately 6,330 people, classifying it as a small to medium agglomeration under EU regulations. As a French facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size discharging into freshwater. The plant's treatment processes are designed to meet national standards set by the French water agencies, ensuring compliance with environmental quality objectives. The treated effluent is discharged into local watercourses that eventually feed into the Dordogne River system, which flows into the Gironde estuary and the Atlantic Ocean. The plant plays a key role in protecting the region's aquatic ecosystems, including sensitive freshwater habitats that support diverse species such as the European otter and migratory fish.

The plant discharges into the Bandiat River, a tributary of the Tardoire, which joins the Bonnieure and eventually the Charente River. The Charente flows into the Atlantic Ocean near Rochefort. The watershed supports diverse aquatic life, including migratory fish like Atlantic salmon and eels, and is part of a region with important wetlands and riparian habitats.