Overview
HALLAUKLETTGAU wastewater treatment plant serves Hallau, Schaffhausen, Switzerland, with a designed capacity of 1.00 and a population equivalent of 19,689. It operates under Swiss water protection regulations.
HALLAUKLETTGAU is a wastewater treatment plant located in Hallau, within the canton of Schaffhausen, Switzerland. Serving a population equivalent of approximately 19,689, the plant is part of the municipal infrastructure for the Klettgau region. Its designed capacity is 1.00, indicating the scale of treatment provided. As a Swiss facility, the plant operates under the Federal Water Protection Act (Gewässerschutzgesetz), which mandates advanced treatment for discharges into sensitive water bodies. For agglomerations of this size, secondary treatment with nutrient removal is typically required to meet stringent Swiss standards for phosphorus and nitrogen. The treated effluent is discharged into local watercourses that drain into the Rhine River basin, ultimately reaching the North Sea. The plant plays a key role in protecting the region's groundwater and surface water quality, supporting aquatic ecosystems and downstream water uses.
Environmental context
The plant discharges into the Rhine River basin, which flows through Switzerland, Germany, and the Netherlands before reaching the North Sea. The local watershed includes the Klettgau region, an area with agricultural land use that can contribute nutrient runoff. The plant's treatment helps reduce eutrophication risks in downstream lakes and rivers, supporting diverse aquatic life and maintaining water quality for drinking water abstraction.
Frequently asked questions
HALLAUKLETTGAU is located in Hallau, in the canton of Schaffhausen, Switzerland. The address is Dienstgebäude, 22, Trasadingerweg, Hallau, Bezirk Unterklettgau, Schaffhausen, 8215.
The plant serves a population equivalent of approximately 19,689 people, classifying it as a medium-sized agglomeration under Swiss and EU standards.
Treated wastewater from HALLAUKLETTGAU is discharged into local watercourses that are part of the Rhine River basin, eventually flowing to the North Sea.
The plant operates under the Swiss Federal Water Protection Act (Gewässerschutzgesetz), which requires advanced treatment for discharges into sensitive waters. For plants of this scale, secondary treatment with nutrient removal is standard.
In Switzerland, wastewater treatment plants serving agglomerations of about 20,000 people typically employ secondary biological treatment with phosphorus and nitrogen removal to meet strict effluent standards, protecting the Rhine basin and downstream ecosystems.
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