Overview
SIERRE_GRANGES wastewater treatment plant serves Sierre, Valais, Switzerland. It treats wastewater for approximately 10,729 people, discharging into the local watershed.
SIERRE_GRANGES is a wastewater treatment plant located in Granges, Sierre, in the canton of Valais, Switzerland. The plant serves a population of approximately 10,729 people, placing it in the medium agglomeration category under Swiss and EU regulatory frameworks. As a Swiss plant, SIERRE_GRANGES operates under the Swiss Water Protection Act (Gewässerschutzgesetz), which mandates secondary treatment for inland plants of this scale. Swiss regulations require compliance with strict effluent standards to protect sensitive alpine water bodies. The plant discharges into the Rhone River basin, which flows through the Valais region and ultimately into Lake Geneva (Lac Léman) and then the Mediterranean Sea via the Rhone River. The local watershed supports diverse aquatic life and is an important corridor for migratory fish species.
Environmental context
The plant discharges into the Rhone River basin, which drains the alpine Valais region. The Rhone flows into Lake Geneva, a large oligotrophic lake, and continues to the Mediterranean Sea. The watershed supports diverse aquatic ecosystems, including fish species such as brown trout and grayling, and is sensitive to nutrient loading from wastewater.
Frequently asked questions
SIERRE_GRANGES is located in Granges, Sierre, in the canton of Valais, Switzerland. The address is Golf Club de Sierre, 1, Route du Moulin, Zone Industrielle le Chablé, Granges, Sierre.
The plant serves approximately 10,729 people, classifying it as a medium-sized agglomeration under Swiss and EU wastewater directives.
The plant discharges treated effluent into the Rhone River basin, which flows through the Valais region and eventually into Lake Geneva and the Mediterranean Sea.
The plant operates under the Swiss Water Protection Act (Gewässerschutzgesetz), which requires secondary treatment and nutrient removal for inland plants of this scale to protect sensitive water bodies.
Swiss regulations mandate secondary biological treatment for agglomerations over 2,000 population equivalents, often with phosphorus removal to protect alpine lakes and rivers from eutrophication.
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