Albula_Alvra Tiefencastel Wastewater Treatment Plant, Graubünden, Switzerland

Albula_Alvra Tiefencastel is an advanced wastewater treatment plant located in the municipality of Albula/Alvra, in the canton of Graubünden, Switzerland. The plant serves a population of 1,789 and is part of the region's municipal wastewater infrastructure, ensuring compliance with Swiss water protection standards. The plant operates with advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a design capacity of 5,000 m³/day and a current discharge volume of 812.07 m³/day, the facility has ample capacity for future growth. Swiss regulations require high treatment standards to protect sensitive alpine water bodies. The treated effluent is discharged into the local watershed, which drains into the Albula River, a tributary of the Rhine. The Rhine ultimately flows into the North Sea. The plant plays a key role in preserving water quality in the Alpine region, supporting aquatic ecosystems and downstream communities.

The plant discharges into the Albula River, which flows into the Hinterrhein and then the Rhine, eventually reaching the North Sea. The Alpine watershed is ecologically sensitive, supporting diverse aquatic life and providing critical habitat for species adapted to cold, oxygen-rich waters. The advanced treatment helps minimize nutrient loading and protect downstream ecosystems.