Zab Amberg Kummersbruck Sitz Amberg Wastewater Treatment Plant, Theuern, Bavaria

Zab Amberg Kummersbruck Sitz Amberg is a wastewater treatment plant located in Theuern, a district of Kümmersbruck in the Amberg-Sulzbach district of Bavaria, Germany. The plant serves a population of around 170,975, classifying it as a large agglomeration under EU regulations. As a large agglomeration, the plant is expected to provide at least secondary treatment under the EU Urban Waste Water Treatment Directive (91/271/EEC). Given its scale and location in a sensitive region, it may also require tertiary treatment to reduce nutrient loads. The regulatory framework ensures compliance with stringent standards. The plant discharges treated wastewater into the local water system, which ultimately drains into the Danube River basin via the Vils River. The Danube is a major European waterway that flows into the Black Sea, supporting diverse aquatic ecosystems and providing water for agriculture and industry along its course.

The plant's treated effluent flows into the Vils River, a tributary of the Naab, which joins the Danube River near Regensburg. The Danube then travels through several countries before reaching the Black Sea. This watershed supports a variety of fish species and migratory birds, and the region is ecologically sensitive due to its role in maintaining water quality for downstream habitats.