HAUSEN Wastewater Treatment Plant, Hausen am Albis, Zürich, Switzerland

The HAUSEN wastewater treatment plant is located in Hausen am Albis, a municipality in the Bezirk Affoltern district of Zürich, Switzerland. The plant serves a population of approximately 1,713 residents and has a designed capacity of 4,500 m³/day, with an actual discharge volume of 777.57 m³/day. As an advanced treatment facility, HAUSEN employs processes that go beyond secondary treatment, likely including nutrient removal to protect sensitive water bodies. Under Swiss water protection law (Gewässerschutzgesetz), plants of this scale are required to meet stringent effluent standards, particularly in the context of the country's commitment to high water quality. The plant's treated effluent is discharged into the local water system, which ultimately drains into the Rhine River basin via the Jonenbach and Reuss River. This watershed supports diverse aquatic life and is an important corridor for migratory fish species. The advanced treatment ensures minimal environmental impact on downstream ecosystems.

The HAUSEN plant discharges into the Jonenbach, a tributary of the Reuss River, which flows into the Rhine River and eventually reaches the North Sea. The local watershed is ecologically sensitive, supporting diverse aquatic habitats and serving as a migratory corridor for fish. Advanced treatment helps protect water quality in this region, which is part of Switzerland's commitment to high environmental standards.