Scuol Ftan Wastewater Treatment Plant, Ftan, Graubünden, Switzerland

The Scuol Ftan wastewater treatment plant is located in the village of Ftan, part of the Scuol municipality in the Engadin region of Graubünden, Switzerland. It serves a population of approximately 1,632 residents in this Alpine valley community. The plant is situated in the Inn River catchment, which flows into the Danube and ultimately the Black Sea. The plant provides secondary treatment, which is the standard biological treatment level required under Swiss wastewater regulations. Swiss law mandates that all wastewater treatment plants achieve secondary treatment, with additional nutrient removal in sensitive areas. The plant's designed capacity of 4,133 m³/day and current discharge volume of 740.80 m³/day indicate it operates well below its maximum capacity, allowing for future growth or seasonal variations. The treated effluent is discharged into the local water system, which feeds into the Inn River. The Inn flows through the Engadin valley, past Scuol, and continues into Austria and Germany before joining the Danube. The Alpine watershed supports sensitive aquatic ecosystems, including brown trout and other cold-water species. The plant's secondary treatment helps protect water quality in this ecologically important river system.

The plant discharges into the Inn River catchment, which flows through the Engadin valley in the Swiss Alps. The Inn River is a major tributary of the Danube, ultimately draining into the Black Sea. The Alpine watershed supports sensitive cold-water ecosystems, including native fish species such as brown trout and Arctic char. The secondary treatment provided by the plant helps maintain water quality in this ecologically important region, which is also a popular area for tourism and outdoor recreation.