Lully Lussy Wastewater Treatment Plant, Lully (VD), Vaud, Switzerland

Lully Lussy is an advanced wastewater treatment plant located in Lully (VD), within the District de Morges in the canton of Vaud, Switzerland. The facility serves a population of 1,408 and has a designed capacity of 1,125 cubic meters per day, with a current discharge volume of 639.12 cubic meters per day. As an advanced treatment plant, Lully Lussy goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, which is typical for Swiss plants operating under stringent national water protection regulations. Switzerland's Water Protection Act requires high treatment standards to safeguard sensitive water bodies, particularly in the Lake Geneva region. The plant's treated effluent likely discharges into a local watercourse that flows into Lake Geneva (Lac Léman), a major European lake. Lake Geneva supports diverse aquatic life and provides drinking water for the region. The advanced treatment helps protect the lake from eutrophication and maintains water quality for downstream communities and ecosystems.

Lully Lussy is situated near Lake Geneva, one of the largest freshwater lakes in Western Europe. The treated effluent from the plant ultimately reaches the lake via local streams, contributing to the lake's water balance. Lake Geneva is ecologically sensitive, supporting a variety of fish species and serving as a critical stopover for migratory birds. The advanced treatment process helps minimize nutrient loading, protecting the lake from algal blooms and preserving its ecological integrity.