Dillingen an der Donau Wastewater Treatment Plant | Bavaria, Germany

The Dillingen an der Donau wastewater treatment plant is located in the town of Dillingen an der Donau, in the Bavarian district of Dillingen, Germany. It serves a population of about 24,000, classifying it as a medium agglomeration under EU standards. The plant is situated near the Danube River, which is the primary receiving water body for treated effluent. As a German facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. Germany implements this directive through national legislation, with oversight by the Bavarian environmental authority. The plant's treatment processes are designed to meet stringent effluent standards to protect the Danube ecosystem. The treated wastewater is discharged into the Danube River, which flows through Central and Eastern Europe before reaching the Black Sea. The Danube is a vital waterway supporting diverse aquatic life and providing drinking water for millions. The plant plays a key role in maintaining water quality in this internationally important river basin.

The plant discharges into the Danube River, which flows through Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Bulgaria, Romania, Moldova, and Ukraine before emptying into the Black Sea. The Danube basin supports a rich diversity of fish species, including sturgeon, and provides critical habitat for migratory birds. The plant's treatment helps reduce nutrient loads that could otherwise contribute to eutrophication in the Black Sea.