ROSSINIERE Wastewater Treatment Plant, Rossinière, Vaud, Switzerland

The ROSSINIERE wastewater treatment plant is located in the municipality of Rossinière, within the District de la Riviera-Pays-d'Enhaut in the canton of Vaud, Switzerland. This facility serves a small population of 374 residents, reflecting its role in a rural Alpine community. The plant is situated near the route de la Gare, in the scenic Pays-d'Enhaut region. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by Swiss regulations for smaller agglomerations. With a designed capacity of 875 m³/day and an actual discharge volume of 169.77 m³/day, the facility operates well below its capacity, indicating room for future growth or seasonal variations. Swiss wastewater treatment is governed by the Federal Water Protection Act (Gewässerschutzgesetz), which mandates high treatment standards to protect sensitive Alpine water bodies. The treated effluent from ROSSINIERE is discharged into the local watershed, which ultimately drains into the Sarine River (Saane) and then into the Aare River, a major tributary of the Rhine. The Rhine flows through Germany and the Netherlands before reaching the North Sea. The plant's advanced treatment helps protect the ecologically sensitive Alpine streams and downstream aquatic habitats, including fish spawning grounds and biodiversity hotspots in the Rhine basin.

The ROSSINIERE plant discharges into the local catchment that feeds the Sarine River, a tributary of the Aare River, which flows into the Rhine. The Rhine basin is a major European waterway supporting diverse aquatic life, including salmon and other migratory fish. The advanced treatment at this plant helps reduce nutrient and pollutant loads, protecting the sensitive Alpine stream ecosystems and downstream water quality in the Rhine delta.