Polsingen Wastewater Treatment Plant, Trendel, Bavaria, Germany

Polsingen wastewater treatment plant is located in Trendel, a village in the municipality of Polsingen, in the Landkreis Weißenburg-Gunzenhausen district of Bavaria, Germany. The plant served a population of approximately 1,277 people and had a designed capacity of 2,500 cubic meters per day. It is currently closed. As a secondary treatment facility, the plant provided biological treatment to remove organic matter and suspended solids. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations with a population equivalent between 2,000 and 10,000 are required to have secondary treatment. Although this plant served fewer than 2,000 people, it still met secondary treatment standards. The plant's discharge volume was recorded at 323.18 cubic meters per day. The treated effluent was likely discharged into a local watercourse that drains into the Danube River basin, as the region is part of the Danube watershed. More centralized facility in the area, which is common for small rural plants under EU directives to improve efficiency and environmental protection.

The plant is located inland in Bavaria, far from the coast, and its discharge would have entered a small stream or river within the Danube basin. The Danube River flows through multiple countries before reaching the Black Sea, supporting diverse aquatic life and important migratory fish species. The region's watershed is ecologically sensitive, with efforts to maintain water quality under the EU Water Framework Directive.