Peissenberg Wastewater Treatment Plant, Peißenberg, Bavaria, Germany

The Peissenberg wastewater treatment plant is located in Peißenberg, a town in the Weilheim-Schongau district of Bavaria, Germany. The facility serves a population of around 15,000 residents, 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 mandates secondary treatment for agglomerations of this scale. The plant's treatment processes are designed to meet the stringent standards set by German water law, ensuring effective removal of organic matter and nutrients. The treated effluent is discharged into the local water system, which ultimately drains into the Ammer River, a tributary of the Amper, and then into the Isar River, which flows into the Danube. This river network supports diverse aquatic life and is part of the larger Danube basin, an ecologically significant region in Central Europe.

The plant's discharge enters the local watershed, which feeds into the Ammer River, a tributary of the Amper. The Amper joins the Isar River, which flows into the Danube River, eventually reaching the Black Sea. This waterway supports diverse aquatic ecosystems, including fish species such as grayling and brown trout, and provides important habitat for migratory birds along the Danube corridor.