KA MERZIG Wastewater Treatment Plant, Merzig, Saarland, Germany

KA MERZIG is a municipal wastewater treatment plant located in Merzig, a town in the Saarland region of southwestern Germany. The plant serves an estimated population of 50,650, placing it in the medium agglomeration category under EU classification. It is situated near the Saar River, which flows through the region and ultimately joins the Moselle River. As a German facility, KA MERZIG operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations with a population equivalent between 10,000 and 150,000. The directive also mandates more stringent treatment if the receiving waters are designated as sensitive areas. The plant's treatment processes and capacity are designed to meet these regulatory standards, ensuring compliance with national and European water quality requirements. The treated effluent from KA MERZIG is discharged into the local watershed, which drains into the Saar River. The Saar flows northward through Saarland and into the Moselle River in Rhineland-Palatinate, eventually reaching the Rhine River and the North Sea. The plant plays a key role in protecting the water quality of the Saar River and its downstream ecosystems, supporting aquatic life and recreational uses in the region.

KA MERZIG discharges treated wastewater into the Saar River basin, which flows into the Moselle River and then the Rhine River before reaching the North Sea. The Saar River supports diverse aquatic life and is an important ecological corridor in the region. The plant's operations help maintain water quality standards in this transboundary river system, which is subject to the EU Water Framework Directive.