Eschenlohe Wastewater Treatment Plant, Bavaria, Germany

Eschenlohe wastewater treatment plant is located in the municipality of Eschenlohe in the district of Garmisch-Partenkirchen, Bavaria, Germany. The plant serves a population of approximately 2,150 and operates under secondary treatment, which is the standard biological treatment required by the EU Urban Waste Water Treatment Directive for agglomerations of this size. The plant has a designed capacity of 3,800 m³/day and currently treats an average daily flow of 544.11 m³/day, indicating significant spare capacity. As a German facility, it is subject to the national implementation of the EU UWWTD, which mandates 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 Loisach River, a tributary of the Isar, and then into the Danube River before reaching the Black Sea. The plant plays a key role in protecting the water quality of this alpine river system, which supports diverse aquatic life and is used for recreation and drinking water supply downstream.

The plant discharges into the Loisach River basin, which flows through the Bavarian Alps and joins the Isar River near Munich. The Isar then flows into the Danube, which empties into the Black Sea. This alpine watershed is ecologically sensitive, supporting species such as the European grayling and various migratory fish. The plant's secondary treatment helps reduce organic pollution and protect downstream water quality.