Hagen Fley Wastewater Treatment Plant, Hagen, Nordrhein-Westfalen

Hagen Fley is a wastewater treatment plant located in the Fley district of Hagen, in the state of Nordrhein-Westfalen, Germany. It serves a population of approximately 34,449 people, classifying it as a medium-sized agglomeration under EU regulations. The plant is situated along the Lenneradweg, near the Lenne River, and is part of the municipal wastewater infrastructure for the city of Hagen. As a German wastewater facility, Hagen Fley operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations with a population equivalent (PE) between 10,000 and 150,000. For plants serving over 10,000 PE, the directive also mandates tertiary treatment if the receiving waters are designated as sensitive areas. The plant's treatment processes are designed to meet these regulatory standards, ensuring compliance with national and EU water quality requirements. The treated effluent from Hagen Fley is discharged into the Lenne River, a tributary of the Ruhr River, which flows into the Rhine River and eventually reaches the North Sea. The Lenne River supports diverse aquatic life and is an important waterway for the region. The plant plays a critical role in protecting the water quality of the Lenne and downstream ecosystems, including the Ruhr and Rhine rivers, by reducing nutrient and pollutant loads.

Hagen Fley discharges treated wastewater into the Lenne River, a tributary of the Ruhr River. The Ruhr flows into the Rhine, which ultimately drains into the North Sea. The Lenne River supports diverse aquatic life and is an important migratory corridor for fish species. The plant's operations help maintain water quality in this ecologically sensitive river system, which is subject to EU water quality standards under the Water Framework Directive.