OBERRIED_EBLIGEN Wastewater Treatment Plant, Ebligen, Bern, Switzerland

OBERRIED_EBLIGEN is a municipal wastewater treatment facility located in Ebligen, a village in the Bernese Oberland region of Switzerland. The plant serves a small population of 121 residents and is part of the local infrastructure managed under Swiss water protection regulations. The plant provides secondary treatment, which is the standard biological treatment stage required for small agglomerations under Swiss law. With a designed capacity of 283 m³/day and a current discharge volume of 54.93 m³/day, the facility operates well below its capacity, indicating spare treatment capacity for future growth or seasonal variations. The treated effluent is discharged into local watercourses that ultimately drain into Lake Brienz, a pristine alpine lake in the Aare river basin. The plant plays a key role in protecting the lake's water quality, which supports aquatic life and serves as a drinking water source for downstream communities.

The plant discharges into the local watershed that feeds into Lake Brienz, a deep alpine lake in the Bernese Oberland. Lake Brienz is part of the Aare river system, which flows into the Rhine and eventually the North Sea. The lake is known for its clear, oligotrophic waters and supports a diverse ecosystem of fish and invertebrates. Protecting this sensitive environment requires effective nutrient removal to prevent eutrophication.