KA HOLZ Wastewater Treatment Plant, Heusweiler, Saarland, Germany

KA HOLZ is a municipal wastewater treatment plant located in the Holz district of Heusweiler, in the Saarland region of Germany. The plant serves a population equivalent of approximately 3,800 residents, placing it in the small agglomeration category under European Union regulations. As a German facility, KA HOLZ operates under 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 national standards enforced by the relevant German state authority. The treated effluent from KA HOLZ is discharged into local watercourses that ultimately drain into the Saar 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 watershed and downstream aquatic ecosystems.

KA HOLZ discharges into the local drainage network that feeds the Saar River, a major tributary of the Moselle. The Moselle joins the Rhine, which flows into the North Sea. The plant's operations help protect the water quality of these rivers, supporting diverse aquatic life and maintaining the ecological health of the Rhine basin.