Pfeffenhausen Wastewater Treatment Plant, Bavaria, Germany

The Pfeffenhausen wastewater treatment plant is located in the town of Pfeffenhausen, in the Landkreis Landshut district of Bavaria, Germany. The plant serves a population of approximately 5,688 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (91/271/EEC). As a German facility, it is subject to the national implementation of the directive, which requires appropriate treatment levels to protect receiving water bodies. Under the EU UWWTD, agglomerations with a population equivalent (PE) between 2,000 and 10,000 are generally required to provide secondary treatment or an equivalent level of treatment. The regulatory framework ensures that the facility meets the necessary standards for its size and discharge location. The plant is located inland, more than 50 km from the coast, reducing direct marine impact. The treated effluent from the Pfeffenhausen plant is discharged into local watercourses that eventually drain into the Danube River basin. The Danube flows eastward through several countries before reaching the Black Sea. The plant plays a role in protecting the water quality of the regional streams and the downstream Danube ecosystem, which supports diverse aquatic life and is an important migratory corridor for fish.

The Pfeffenhausen plant discharges into local streams that are part of the Danube River basin. The Danube flows through Central and Eastern Europe before emptying into the Black Sea. The watershed supports diverse aquatic habitats and is an important ecological corridor. The plant's treatment helps maintain water quality in the regional water bodies, which are sensitive to nutrient pollution from agricultural and urban runoff.