Freilassing Wastewater Treatment Plant: Serving Freilassing, Bavaria

The Freilassing wastewater treatment plant is located in the town of Freilassing, in the Berchtesgadener Land district of Bavaria, Germany. The facility serves a population of around 33,882, classifying it as a medium-sized agglomeration under EU regulations. As a German plant, Freilassing operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. The plant's treatment processes are designed to meet these regulatory standards, ensuring effective removal of organic matter and nutrients. The treated effluent from Freilassing is discharged into local water bodies that ultimately drain into the Danube River basin. This river system flows into the Black Sea, making the plant's performance important for downstream water quality. The region's alpine terrain and proximity to the Salzach River contribute to the ecological sensitivity of the area, supporting diverse aquatic life and recreational uses.

The Freilassing plant discharges into local streams that feed into the Salzach River, a major tributary of the Inn River, which joins the Danube. The Danube flows through multiple countries before reaching the Black Sea. This watershed supports diverse aquatic ecosystems, including fish species such as Danube salmon and various migratory birds. The plant's nutrient removal helps prevent eutrophication in downstream lakes and coastal areas.