Raubling Wastewater Treatment Plant, Bavaria, Germany

Raubling wastewater treatment plant is located in the municipality of Raubling, in the Landkreis Rosenheim district of Bavaria, Germany. The plant serves a population of approximately 23,148 people, classifying it as a medium-sized agglomeration under EU regulations. As a German facility, the plant operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations with a population equivalent between 10,000 and 150,000. The plant's treatment processes are designed to meet the standards set by this directive, ensuring that discharged water complies with environmental quality objectives. The treated effluent from the plant is discharged into the Inn River, a major tributary of the Danube. The Inn flows through the Alpine foothills and eventually joins the Danube, which drains into the Black Sea. The plant plays a crucial role in protecting the water quality of the Inn and downstream ecosystems, including the Danube Delta, a region of high ecological importance.

The plant discharges into the Inn River, which flows through the Bavarian Alps and joins the Danube near Passau. The Danube then travels through Central and Eastern Europe before reaching the Black Sea. The Inn River supports diverse aquatic life, including fish species such as grayling and brown trout. Downstream, the Danube Delta is a critical habitat for migratory birds and numerous fish species. The plant's treatment helps maintain water quality in this transboundary river system.