Obergartzem Enzen Wastewater Treatment Plant, Zülpich, Nordrhein-Westfalen

Obergartzem Enzen is a municipal wastewater treatment plant located in the Enzen district of Zülpich, in the state of Nordrhein-Westfalen, Germany. The plant serves a population equivalent of 15,945, placing it in the medium agglomeration category under EU classification. As a German facility, the plant is subject to the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size. The plant's treatment process and capacity details are not publicly available, but the regulatory framework ensures compliance with national and European standards for effluent quality. The treated wastewater is discharged into the local water system, which ultimately drains into the Rhine River basin. The Rhine is a major European waterway that flows through Germany and the Netherlands into the North Sea, supporting diverse aquatic ecosystems and serving as a critical water resource for millions of people.

The plant discharges into the local catchment that feeds the Erft River, a tributary of the Rhine. The Rhine basin is ecologically significant, supporting diverse fish species, migratory birds, and riparian habitats. Downstream, the Rhine flows into the North Sea, a sensitive marine environment that benefits from nutrient reduction efforts under the EU Water Framework Directive.