SOTTENS Wastewater Treatment Plant, Jorat-Menthue, Vaud, Switzerland

SOTTENS is a wastewater treatment plant located in the village of Sottens, part of the municipality of Jorat-Menthue in the canton of Vaud, Switzerland. The plant serves a small population of 685 residents and operates with advanced treatment technology, ensuring high-quality effluent standards. With a designed capacity of 1144.00 m³/day and an average discharge volume of 310.94 m³/day, the plant operates well below its capacity, indicating room for future growth. As a Swiss facility, it complies with the national Water Protection Act (Gewässerschutzgesetz), which mandates stringent treatment requirements for all discharges into water bodies. The treated effluent is released into local waterways that drain into the Broye river system, eventually reaching Lake Neuchâtel. This region is part of the Rhine basin, and the plant's advanced treatment helps protect downstream aquatic ecosystems and drinking water resources.

The plant discharges into local streams that flow into the Broye river, a tributary of the Aar river, which ultimately drains into the Rhine and the North Sea. The surrounding watershed supports diverse aquatic life and is used for agriculture and recreation. Advanced treatment at SOTTENS minimizes nutrient and pollutant loads, safeguarding water quality in this ecologically sensitive area.