Fehraltorf Wastewater Treatment Plant, Fehraltorf, Zürich, Switzerland

The Fehraltorf wastewater treatment plant (ARA Fehraltorf - Russikon) is located in the municipality of Fehraltorf, Bezirk Pfäffikon, in the canton of Zürich, Switzerland. It serves a population of around 10,500 people, making it a medium-sized agglomeration under Swiss water protection regulations. Switzerland's Water Protection Act (Gewässerschutzgesetz) requires all wastewater treatment plants to meet stringent standards, typically including mechanical and biological treatment with nutrient removal. Plants of this scale in Switzerland generally employ advanced treatment to protect sensitive water bodies. The treated effluent is discharged into local streams that flow into the Kempt River, a tributary of the Töss River, which eventually drains into the Rhine River and the North Sea. The plant plays a key role in maintaining water quality in the densely populated Zürich region, supporting aquatic life and downstream ecosystems.

The plant discharges into the local drainage network leading to the Kempt River, a tributary of the Töss River, which flows into the Rhine River and ultimately the North Sea. This watershed supports diverse aquatic habitats and is important for regional biodiversity. The plant's operations help protect water quality in a region with mixed agricultural and urban land use.