Celerina_Schlarigna Staz Wastewater Treatment Plant, Bever, Graubünden

Celerina_Schlarigna Staz is a wastewater treatment plant located in the municipality of Bever, in the Maloja region of Graubünden, Switzerland. It serves a population equivalent of around 37,151, placing it in the medium agglomeration category under Swiss and EU regulatory frameworks. As a Swiss plant, it operates under the Swiss Water Protection Act (Gewässerschutzgesetz), which mandates stringent treatment standards. For agglomerations of this scale, secondary treatment with nutrient removal is typically required to protect sensitive alpine water bodies. Swiss regulations ensure compliance with high environmental standards. The plant discharges into the local watershed, which drains into the Inn River and ultimately the Danube River basin, flowing into the Black Sea. This alpine region is ecologically sensitive, supporting diverse aquatic life and providing important water resources for downstream communities and ecosystems.

The plant's treated effluent enters the local watercourse, which flows into the Inn River near Bever. The Inn River is a major tributary of the Danube, eventually reaching the Black Sea. This alpine watershed supports sensitive aquatic ecosystems, including cold-water fish species and diverse macroinvertebrate communities. The region's high-altitude environment requires careful management to prevent nutrient enrichment and maintain water quality.