Lohmen Wastewater Treatment Plant - Sachsen, Germany

The Lohmen wastewater treatment plant is located in the town of Lohmen, in the district of Sächsische Schweiz-Osterzgebirge, Sachsen, Germany. It serves a population of approximately 3,014 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). The plant is situated inland, away from coastal areas, and its operations are subject to German water management regulations. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU UWWTD for agglomerations of this size. With a designed capacity of 5,500 m³/day and a current discharge volume of 462.90 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The treatment level ensures high-quality effluent that meets stringent environmental standards. The treated wastewater is discharged into local water bodies that ultimately drain into the Elbe River basin. The Elbe flows through Germany and into the North Sea, supporting diverse aquatic ecosystems. The advanced treatment helps protect the sensitive watershed of the Elbe, which is an important ecological corridor for fish and other wildlife.

The plant discharges into the Wesenitz River, a tributary of the Elbe River. The Elbe flows through Germany and the Czech Republic before reaching the North Sea. This watershed supports diverse aquatic life, including migratory fish species. The advanced treatment at Lohmen helps reduce nutrient loading and protects downstream water quality in this ecologically sensitive region.