Obersussbach Wastewater Treatment Plant, Niedersüßbach, Bavaria

Obersussbach wastewater treatment plant is located in Niedersüßbach, a district of Obersüßbach in the Landkreis Landshut, Bavaria, Germany. The facility served a population of approximately 1,718 people and is now closed. The plant provided secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The designed capacity was 1,600 cubic meters per day, and the recorded discharge volume was 508.32 cubic meters per day. The treated effluent was discharged into local watercourses that drain into the Kleine Laber river, a tributary of the Danube. The Danube ultimately flows into the Black Sea. The plant's operation contributed to protecting the local watershed and downstream aquatic ecosystems.

The plant discharged into the Kleine Laber river basin, which flows into the Danube River and eventually the Black Sea. The region supports diverse aquatic life and is part of a larger network of rivers and wetlands important for migratory birds and fish species. The secondary treatment helped reduce organic pollutants and protect water quality in the downstream environment.