PIENNES Wastewater Treatment Plant, Piennes, Grand Est, France

The PIENNES wastewater treatment plant is located in Piennes, a commune in the Meurthe-et-Moselle department of the Grand Est region, France. The facility serves a population of approximately 2,450 residents and is designed to handle a capacity of 5,500 m³ per day, with an average discharge volume of 437.08 m³ per day. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. As a French facility, it operates under the European Union's Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for agglomerations of this size to protect receiving water bodies. The treated effluent is discharged into local waterways that ultimately drain into the Meuse River basin. The region's water bodies support diverse aquatic life and are important for local ecosystems. The plant's advanced treatment helps minimize nutrient loading and maintain water quality in the downstream environment.

The PIENNES plant discharges into the local hydrographic network, which flows into the Meuse River basin. The Meuse River traverses France, Belgium, and the Netherlands before emptying into the North Sea. This watershed supports a variety of fish species and aquatic habitats. Advanced treatment at the plant reduces the risk of eutrophication and protects downstream water quality in this ecologically sensitive river system.