Oberaudorf Wastewater Treatment Plant, Niederaudorf, Bayern

The Oberaudorf wastewater treatment plant is located in Niederaudorf, a district of Oberaudorf in the Landkreis Rosenheim, Bayern, Germany. The facility serves a population of approximately 6,500 and operates with advanced treatment processes, ensuring high-quality effluent before discharge. With a designed capacity of 15,500 cubic meters per day and an average discharge volume of 912 cubic meters per day, the plant operates well below its capacity. As a German facility, it complies with the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates advanced treatment for sensitive areas and agglomerations of this scale. The treated effluent is discharged into the local water system, ultimately flowing into the Inn River, a major tributary of the Danube. The Inn River supports diverse aquatic life and is an important ecological corridor in the Alpine region. The plant's advanced treatment helps protect downstream water quality in the Danube basin.

The plant discharges into the Inn River, which flows through the Bavarian Alps and joins the Danube near Passau. The Inn River supports diverse aquatic ecosystems, including fish species such as grayling and brown trout. Downstream, the Danube River is a vital European waterway, and the plant's advanced treatment helps reduce nutrient loads and protect the river's ecological health.