Hahnstatten GKA Wastewater Treatment Plant, Niederneisen, Germany

Hahnstatten GKA is a municipal wastewater treatment plant located in Niederneisen, a town in the Rhein-Lahn-Kreis district of Rheinland-Pfalz, Germany. The plant serves a population of around 11,573, classifying it as a medium-sized agglomeration under EU regulations. As a German facility, Hahnstatten GKA 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 processes and capacity are designed to meet these standards, ensuring compliance with national and European water quality requirements. The treated effluent from Hahnstatten GKA is discharged into the local watershed, which ultimately drains into the Rhine River basin. The Rhine is a major European waterway that flows through Germany and into the North Sea, supporting diverse aquatic ecosystems and providing drinking water for millions of people.

The plant discharges into the Rhine River basin, a major European watershed that flows through Germany and into the North Sea. The Rhine supports diverse aquatic life, including fish species such as salmon and eel, and is an important migratory corridor. Protecting water quality in this basin is critical for downstream ecosystems and human water use.