Allershausen Wastewater Treatment Plant, Tünzhausen, Bavaria

The Allershausen wastewater treatment plant is located in Tünzhausen, a district of Allershausen in the Bavarian region of Germany. Serving a population of approximately 6,743, the facility is part of the municipal infrastructure managed by the local administrative community (Verwaltungsgemeinschaft) of Allershausen. The plant is situated near the Amper River, a tributary of the Isar, which ultimately drains into the Danube and the Black Sea. As a German wastewater treatment facility serving a medium-sized agglomeration, the plant is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC). This directive requires secondary treatment for discharges into freshwater bodies, with more stringent tertiary treatment if the receiving waters are designated as sensitive areas. The plant's treatment processes are designed to meet these regulatory standards, ensuring compliance with German water quality laws. The treated effluent from the plant is discharged into the Amper River, which flows through the Amper Valley and joins the Isar near Moosburg. The Isar then flows through Munich and into the Danube, eventually reaching the Black Sea. The plant plays a crucial role in protecting the local aquatic ecosystem and downstream water quality, supporting biodiversity in the Amper and Isar rivers.

The Allershausen plant discharges into the Amper River, a tributary of the Isar, which flows into the Danube and ultimately the Black Sea. The Amper and Isar rivers support diverse aquatic life, including fish species such as grayling and brown trout. The plant's treatment helps maintain water quality in these ecologically sensitive rivers, which are important for recreation and wildlife.