MOIRY Wastewater Treatment Plant, Moiry, Vaud, Switzerland

MOIRY is an advanced wastewater treatment plant located in the small village of Moiry, within the District de Morges in the canton of Vaud, Switzerland. Serving a population of 310, this facility is designed to handle a capacity of 725.00 m³/day, with an actual discharge volume of 140.72 m³/day, indicating significant reserve capacity. As an advanced treatment plant, MOIRY employs processes that go beyond secondary treatment, likely including nutrient removal or disinfection, in line with Swiss standards for protecting sensitive water bodies. Switzerland, as part of the European Free Trade Association, aligns its wastewater regulations with the EU Urban Waste Water Treatment Directive, which mandates advanced treatment for discharges into sensitive areas. The plant's proximity to the coast (within 10 km) suggests its effluent may eventually reach Lake Geneva or the Rhône River system, which flows into the Mediterranean Sea. This coastal location underscores the importance of advanced treatment to minimize nutrient loading and protect downstream aquatic ecosystems.

The treated effluent from MOIRY likely discharges into local streams that feed into the Rhône River basin, ultimately reaching Lake Geneva and the Mediterranean Sea. As a coastal plant within 10 km of the shore, its advanced treatment helps reduce nutrient and pollutant loads, protecting sensitive freshwater and marine habitats. The region supports diverse aquatic life and is an important migratory corridor for fish species.