Abwasserzweckverband Penzing Weil Sitz Penzing - Petzenhausen, Bavaria Wastewater Treatment

Abwasserzweckverband Penzing Weil Sitz Penzing is a municipal wastewater treatment plant located in Petzenhausen, a district of Weil in the Landkreis Landsberg am Lech, Bavaria, Germany. The plant serves a population of approximately 7,815 people, classifying it as a small to medium agglomeration under the EU Urban Waste Water Treatment Directive (91/271/EEC). As a German plant serving fewer than 10,000 people, it is required to provide secondary treatment (biological treatment) under the EU UWWTD. The plant's operational details, including specific treatment processes and capacity, are managed by the local water association (Abwasserzweckverband). German wastewater facilities are subject to strict federal and state regulations, with permits issued by the relevant water authorities in Bavaria. The treated effluent is discharged into local water bodies that eventually drain into the Lech River, a tributary of the Danube. The Danube flows into the Black Sea, making this plant part of a vast transboundary river basin. The surrounding region is characterized by agricultural land and small settlements, and the plant plays a key role in protecting local streams and groundwater from nutrient pollution.

The plant discharges into the local drainage network that feeds into the Lech River, a major tributary of the Danube. The Danube ultimately flows into the Black Sea, making this plant part of a large international river basin. The receiving waters support diverse aquatic life and are used for agriculture and recreation. Effective nutrient removal at the plant helps prevent eutrophication in downstream lakes and the Danube Delta ecosystem.