KLEINDOETTIGEN Wastewater Treatment Plant, Kleindöttingen, Aargau, Switzerland

KLEINDOETTIGEN is a wastewater treatment plant located in Kleindöttingen, a village in the canton of Aargau, Switzerland. The plant serves a population of about 8,036 people, placing it in the small to medium agglomeration category. It is situated inland, away from coastal areas, and its operations are governed by Swiss federal water protection laws. Switzerland enforces stringent wastewater treatment standards under the Waters Protection Act (Gewässerschutzgesetz). For agglomerations of this size, secondary treatment with nutrient removal is typically required to protect sensitive water bodies. Swiss regulations mandate effective treatment to prevent pollution of rivers and groundwater. The treated effluent from KLEINDOETTIGEN is discharged into local watercourses that ultimately drain into the Rhine River basin. The Rhine is a major European river supporting diverse aquatic life and providing drinking water for millions. The plant plays a key role in maintaining water quality in the Aare River tributaries and the broader Rhine ecosystem.

KLEINDOETTIGEN discharges into local streams that flow into the Aare River, a major tributary of the Rhine. The Rhine basin is ecologically significant, supporting species such as salmon and migratory fish. The plant's operations help protect downstream water quality in the Aare and Rhine, which are used for drinking water, recreation, and habitat. The region's groundwater is also sensitive to contamination, making effective treatment essential.