Pfaffenhofen ad Glonn Wastewater Treatment Plant, Wagenhofen, Bayern

Pfaffenhofen ad Glonn is a wastewater treatment plant located in Wagenhofen, a district of Pfaffenhofen an der Glonn in the Landkreis Dachau, Bayern, Germany. The plant serves a population of approximately 2,400 residents, placing it in the small agglomeration category under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant is equipped with advanced treatment processes, which go beyond the secondary treatment standard required for agglomerations of this size under the EU directive. It has a designed capacity of 3,000 cubic meters per day, with a current discharge volume of about 607 m³/day, indicating operational headroom. As a German facility, it operates under the national Wasserhaushaltsgesetz (Water Resources Act) and relevant state regulations from Bayern. The treated effluent is discharged into local water bodies within the Glonn river system, which ultimately drains into the Danube basin. The plant's advanced treatment helps protect downstream aquatic ecosystems, including the Danube River and its delta, by reducing nutrient loads and pollutants. This is particularly important for maintaining water quality in the sensitive freshwater and coastal environments of the Black Sea region.

The plant discharges into the Glonn River, a tributary of the Danube River system. The Danube flows through multiple countries before reaching the Black Sea, making nutrient management critical to prevent eutrophication in the Danube Delta and coastal waters. The advanced treatment at this plant helps reduce nitrogen and phosphorus loads, supporting the ecological health of downstream wetlands and aquatic habitats.