Jandelsbrunn Wastewater Treatment Plant, Wollaberg, Bavaria, Germany

Jandelsbrunn wastewater treatment plant is located in Wollaberg, a district of Jandelsbrunn in the Bavarian county of Freyung-Grafenau, Germany. The facility served a population of approximately 1,756 people and is now closed. The plant was designed with a capacity of 4,200 cubic meters per day and treated an average discharge volume of 634.89 cubic meters per day. As an advanced treatment facility, Jandelsbrunn employed processes beyond secondary treatment to remove nutrients and other pollutants, meeting stringent German and EU standards. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), small agglomerations like this are typically required to provide secondary treatment, but advanced treatment may be mandated in sensitive areas. The plant's treated effluent was discharged into local watercourses that drain into the Danube River basin, ultimately reaching the Black Sea. With flows redirected to a larger plant for continued environmental protection.

The plant discharged into small streams in the Bavarian Forest region, which flow into the Danube River system via the Ilz or other tributaries. The Danube carries water through several countries to the Black Sea. The local watershed supports diverse aquatic life, including fish species such as brown trout and grayling, and the forested catchment helps maintain water quality. The advanced treatment likely helped protect downstream ecosystems from nutrient pollution.