CROYAIVN Wastewater Treatment Plant, Croy, Vaud, Switzerland

CROYAIVN is an advanced wastewater treatment plant located in Croy, a municipality in the Jura-Nord vaudois district of Vaud, Switzerland. The plant serves a population of 1,421 and has a designed capacity of 2,375 m³/day, with a current discharge volume of 645 m³/day. It operates under Swiss water protection regulations, which mandate advanced treatment for sensitive water bodies. The plant employs advanced treatment processes, which include nutrient removal to protect receiving waters. Switzerland's Water Protection Act requires stringent treatment standards, especially for plants discharging into ecologically sensitive areas. The plant's capacity utilization indicates it operates well below its design capacity, allowing for future growth. The treated effluent from CROYAIVN ultimately drains into the Rhône River basin via local streams, contributing to the water quality of Lake Geneva (Lac Léman) and the Rhône River. The plant plays a key role in protecting the local watershed and downstream ecosystems, including the lake's diverse aquatic life.

CROYAIVN discharges into the local watershed that feeds into the Rhône River basin, which flows into Lake Geneva and eventually the Mediterranean Sea. The region supports diverse aquatic habitats, including fish spawning grounds and migratory bird corridors. Advanced treatment helps minimize nutrient loading, protecting the lake from eutrophication and maintaining water quality for recreation and drinking water.