GRANDSON Wastewater Treatment Plant, Les Tuileries, Vaud, Switzerland

GRANDSON wastewater treatment plant is located in Les Tuileries, Grandson, in the canton of Vaud, Switzerland. The facility serves a population of approximately 6,139 people, making it a small to medium-sized municipal plant. It operates within Switzerland's robust water protection framework, which mandates advanced treatment for sensitive receiving waters. Switzerland enforces strict effluent standards under the Waters Protection Act (GSchG) and the Waters Protection Ordinance (GSchV). For plants of this scale, secondary treatment with nutrient removal is typically required, especially when discharging into ecologically sensitive water bodies. The plant's designed capacity is 1.00 (likely in thousands of cubic meters per day or similar unit), indicating it is sized to handle the local load. The plant discharges treated wastewater into the local hydrological network, which ultimately drains into Lake Neuchatel, one of the largest lakes in Switzerland. Lake Neuchatel is part of the Rhine basin and supports diverse aquatic life, including fish species such as perch and pike. The plant's operation helps protect this important water body from nutrient pollution and maintains water quality for recreation and ecosystem health.

The plant's treated effluent flows into the local watercourse, which drains into Lake Neuchatel, a large perialpine lake in western Switzerland. Lake Neuchatel is part of the Rhine basin and ultimately drains into the North Sea. The lake supports diverse aquatic ecosystems, including fish spawning grounds and migratory bird habitats. Protecting water quality is critical to prevent eutrophication and maintain the lake's ecological balance.