KA Wunschendorf Wastewater Treatment Plant, Pockau-Lengefeld, Saxony

KA Wunschendorf is an advanced wastewater treatment plant located in the Wünschendorf district of Pockau-Lengefeld, in the Erzgebirgskreis district of Saxony, Germany. The plant serves a population of approximately 4,669 people, reflecting its role in managing municipal wastewater for this small community in the Ore Mountains region. As an advanced treatment facility, KA Wunschendorf goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, which is typical for plants in sensitive catchment areas under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant has a designed capacity of 8,000 m³/day and currently discharges an average of 700.35 m³/day, indicating significant spare capacity for future growth or seasonal peaks. The treated effluent from KA Wunschendorf is discharged into local watercourses that ultimately drain into the Flöha River, a tributary of the Zschopau River, which flows into the Freiberger Mulde and then the Elbe River. The Elbe carries the water through Germany to the North Sea. This downstream chain highlights the plant's role in protecting the water quality of the Elbe basin, a major European watershed supporting diverse aquatic life and ecosystems.

KA Wunschendorf discharges into local streams that feed the Flöha River, a tributary of the Zschopau River. The Zschopau joins the Freiberger Mulde, which flows into the Elbe River and ultimately reaches the North Sea. The Elbe basin is ecologically significant, supporting migratory fish species and providing habitat for diverse aquatic organisms. The plant's advanced treatment helps reduce nutrient loads that could otherwise contribute to eutrophication in downstream waters.