Overview
Silvaplana wastewater treatment plant serves Surlej in Graubünden, Switzerland. It treats wastewater for approximately 8,733 people in the Alpine region.
The Silvaplana wastewater treatment plant is located in Surlej, a locality within the municipality of Silvaplana in the canton of Graubünden, Switzerland. Situated in the Upper Engadin valley, the plant serves a population of about 8,733 people, reflecting the scale of a medium-sized agglomeration in a mountainous region. As a Swiss wastewater facility, the plant operates under the national Water Protection Act (Gewässerschutzgesetz), which implements stringent standards aligned with the EU Urban Waste Water Treatment Directive. For agglomerations of this size, secondary treatment with nutrient removal is typically required to protect sensitive Alpine waters. The plant's capacity and treatment processes are designed to meet these high environmental standards. The treated effluent is discharged into the Inn River catchment, which flows through the Engadin valley and eventually into the Danube River basin. This Alpine watershed is ecologically sensitive, supporting diverse aquatic life and serving as a critical water resource for downstream communities. The plant plays a key role in preserving water quality in this pristine mountain environment.
Environmental context
The Silvaplana plant discharges into the Inn River system, which originates in the Swiss Alps and flows through Austria and Germany before joining the Danube. This Alpine watershed is characterized by cold, oxygen-rich waters that support sensitive species such as brown trout and the endangered freshwater pearl mussel. The plant's treatment performance is crucial for maintaining the ecological integrity of this high-altitude river ecosystem, which is also a popular destination for tourism and recreation.
Frequently asked questions
The Silvaplana wastewater treatment plant is located in Surlej, a locality within the municipality of Silvaplana in the canton of Graubünden, Switzerland. The address is Riva Crastatscha, Surlej, 7513.
The plant serves approximately 8,733 people, representing a medium-sized agglomeration in the Upper Engadin valley.
The treated wastewater is discharged into the Inn River catchment, which flows through the Engadin valley and eventually into the Danube River basin.
The plant operates under the Swiss Water Protection Act, which enforces strict standards for wastewater treatment to protect sensitive Alpine waters. These standards are aligned with the EU Urban Waste Water Treatment Directive.
For agglomerations of this size in Switzerland, secondary treatment with nutrient removal is typically required to meet the high water quality standards of the Water Protection Act, especially in ecologically sensitive Alpine regions.
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