ZKA Boxberg Wastewater Treatment Plant, Boxberg/O.L., Saxony, Germany

ZKA Boxberg is a municipal wastewater treatment plant located in Boxberg/O.L. (Hamor), in the state of Saxony, Germany. The facility serves a population of around 2,683 and operates with secondary treatment, which is the standard for smaller agglomerations under the EU Urban Waste Water Treatment Directive. The plant has a designed capacity of 4,000 cubic meters per day and reports a discharge volume of 585.75 cubic meters, indicating it operates well below its capacity. As a German facility, it is subject to the national wastewater ordinance (Abwasserverordnung) and the EU UWWTD, which require secondary treatment for inland plants serving between 2,000 and 10,000 population equivalents. The treated effluent is discharged into the local watershed, which ultimately drains into the Spree River and then the Havel River, part of the Elbe basin. This region is ecologically important, supporting diverse aquatic life and contributing to the water quality of the North Sea via the Elbe estuary.

The plant discharges into the local catchment that feeds the Spree River, a tributary of the Havel River, which flows into the Elbe and eventually the North Sea. The Spree River runs through the Lusatian region, known for its post-mining lakes and wetlands. The area supports diverse aquatic habitats and is important for migratory birds. Proper treatment helps protect downstream water quality in this ecologically sensitive river system.