Mittweida ZKA Wastewater Treatment Plant, Mittweida, Saxony, Germany

Mittweida ZKA is a municipal wastewater treatment facility located in Mittweida, Saxony, Germany. The plant serves a population of around 20,500, classifying it as a medium-sized agglomeration under 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 advanced treatment if the receiving waters are designated as sensitive areas. The plant's treated effluent is discharged into the local water system, which ultimately drains into the Zschopau River, a tributary of the Freiberger Mulde, then the Mulde, and finally the Elbe River, which flows into the North Sea. This catchment supports diverse aquatic life and is part of the Elbe basin.

The plant discharges into the Zschopau River, which flows into the Freiberger Mulde, then the Mulde, and ultimately the Elbe River, draining into the North Sea. The Elbe basin supports diverse aquatic ecosystems and is an important migratory corridor for fish species. The region's water quality is regulated under the EU Water Framework Directive.