Overview
Sils iE_Segl Fex wastewater treatment plant serves the Swiss municipality of Sils im Engadin/Segl in Graubünden. It provides advanced treatment for a small population of 320, with a designed capacity of 750 m³/day.
Sils iE_Segl Fex is a wastewater treatment plant located in the Alpine municipality of Sils im Engadin/Segl, within the canton of Graubünden, Switzerland. The plant serves a small population of 320 residents, reflecting the rural and mountainous character of the region. It is situated in the Upper Engadin valley, a popular tourist destination known for its pristine lakes and natural landscapes. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by Swiss regulations for smaller agglomerations. Switzerland's Water Protection Act mandates stringent effluent quality to protect sensitive Alpine waters. With a designed capacity of 750 m³/day and a current discharge volume of 145.26 m³/day, the facility operates well below its capacity, indicating room for seasonal tourist influxes. The treated effluent is discharged into the local watershed, which ultimately drains into the Inn River and then the Danube River basin, flowing into the Black Sea. The Upper Engadin region is ecologically sensitive, supporting diverse aquatic life and serving as a headwater area for major European river systems. The plant's advanced treatment helps minimize nutrient and pollutant loads, preserving water quality in this high-altitude environment.
Environmental context
The plant discharges into the Inn River catchment, part of the Danube River basin that flows into the Black Sea. The Upper Engadin valley features oligotrophic Alpine lakes and streams that are sensitive to nutrient enrichment. Advanced treatment reduces phosphorus and nitrogen loads, protecting downstream aquatic ecosystems and maintaining the region's high water quality standards.
Frequently asked questions
The plant is located in Sils im Engadin/Segl, in the canton of Graubünden, Switzerland, in the Upper Engadin valley.
The plant serves a population of 320 residents, with capacity to handle seasonal tourist increases.
Treated effluent is discharged into the local watershed, which flows into the Inn River and eventually the Danube River basin.
The plant provides advanced treatment, exceeding the secondary treatment standard required by Swiss regulations for small agglomerations.
Switzerland's Water Protection Act requires stringent effluent quality to protect sensitive Alpine waters. Advanced treatment at this plant helps meet those standards.
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