Hirschau Wastewater Treatment Plant: Serving Hirschau, Bavaria, Germany

The Hirschau wastewater treatment plant is located in the town of Hirschau, in the Bavarian district of Amberg-Sulzbach, Germany. The facility serves a population of about 4,300 residents, classifying it as a small agglomeration under EU regulations. As a German plant, Hirschau is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for discharges into freshwater. For small agglomerations like Hirschau, secondary treatment is typically mandated to protect water quality. The plant's treated effluent is discharged into local waterways that ultimately drain into the Danube River basin. The receiving waters support aquatic life and contribute to the ecological health of the region. Proper treatment helps maintain water quality in the sensitive freshwater ecosystems of Bavaria.

The plant discharges into local streams that flow into the Vils River, a tributary of the Naab, which joins the Danube near Regensburg. The Danube is a major European river supporting diverse aquatic species and providing drinking water for millions. The watershed is ecologically sensitive, with habitats for fish and macroinvertebrates that require good water quality.