Selters Taunus _ Niederselters Wastewater Treatment Plant, Niederselters, Hessen

Selters Taunus _ Niederselters is a wastewater treatment plant located in Niederselters, a district of Selters (Taunus) in the Landkreis Limburg-Weilburg, Hessen, Germany. The plant serves a population of approximately 54,230, classifying it as a medium-sized agglomeration under EU regulations. As a German plant, it operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. Compliance with national and EU standards is expected. The treated effluent is discharged into local watercourses that ultimately drain into the Lahn River, a tributary of the Rhine. The Rhine basin is a major European watershed supporting diverse aquatic life and providing drinking water for millions. The plant plays a key role in protecting the water quality of these downstream ecosystems.

The plant discharges into the local watershed that feeds the Lahn River, which flows into the Rhine River. The Rhine basin is ecologically significant, supporting diverse fish species and serving as a critical migratory corridor. The plant's operations help maintain water quality in this important European river system.