SERVION Wastewater Treatment Plant, Servion, Vaud, Switzerland

SERVION is a wastewater treatment plant located in Servion, a municipality in the district of Lavaux-Oron, Vaud, Switzerland. It serves a small population of 673 residents, reflecting its role in a rural or peri-urban setting within the Swiss canton of Vaud. 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 1125 m³/day and an actual discharge volume of 305.49 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The treated effluent from SERVION is discharged into local watercourses that ultimately drain into the Rhone River basin, contributing to the broader hydrological network of Lake Geneva and the Mediterranean Sea. The advanced treatment level helps protect sensitive aquatic ecosystems in the region, which support diverse freshwater species and are important for regional water quality.

The SERVION plant discharges into local streams that flow into the Broye or Veveyse rivers, which are tributaries of the Rhone River. The Rhone drains into Lake Geneva (Lac Léman) and eventually reaches the Mediterranean Sea. The watershed supports diverse aquatic life, including fish species such as brown trout and grayling, and is ecologically sensitive due to agricultural runoff and urban pressures in the region.