Unteres Liesertal GKA Lieser Wastewater Treatment Plant, Maring-Noviand, Germany

Unteres Liesertal GKA Lieser is a municipal wastewater treatment plant located in Maring-Noviand, within the Bernkastel-Wittlich district of Rheinland-Pfalz, Germany. The plant serves a population of around 21,045, classifying it as a medium-sized agglomeration under German and 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 stringent treatment if the receiving waters are designated as sensitive areas. Compliance with the directive ensures appropriate treatment standards. The treated effluent is discharged into the Lieser River, a tributary of the Moselle, which flows into the Rhine and eventually the North Sea. The plant plays a key role in protecting the local water quality and the downstream aquatic ecosystem, supporting biodiversity in the Moselle and Rhine basins.

The plant discharges into the Lieser River, which flows into the Moselle River, a major tributary of the Rhine. The Rhine ultimately drains into the North Sea. The Moselle and Rhine rivers support diverse aquatic life and are important for regional ecology. The plant's operations help maintain water quality in this sensitive river system, which is subject to EU water quality standards.