Kreischa Wastewater Treatment Plant, Dohna, Saxony, Germany

The Kreischa wastewater treatment plant is located in the Lockwitzgrund area of Dohna, within the district of Sächsische Schweiz-Osterzgebirge in Saxony, Germany. The plant serves a population of approximately 14,950, classifying it as a medium agglomeration under EU regulations. As a German facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations between 10,000 and 150,000 population equivalent. The plant's treatment processes are designed to meet these standards, ensuring compliance with national and European water quality regulations. The treated effluent is discharged into the local watershed, which ultimately drains into the North Sea via the Elbe River system. The plant plays a key role in protecting the water quality of the Lockwitzbach stream and downstream aquatic ecosystems, supporting biodiversity and recreational use of the Elbe basin.

The plant discharges into the Lockwitzbach, a tributary of the Müglitz River, which flows into the Elbe River near Dresden. The Elbe then continues through Germany to the North Sea. The watershed supports diverse aquatic life, including fish species such as salmon and trout, and provides important habitat in the Elbe floodplain. The plant's treatment helps maintain water quality in this ecologically sensitive region.