BALLAIGUES Wastewater Treatment Plant, Ballaigues, Vaud, Switzerland

BALLAIGUES is a wastewater treatment plant located in Ballaigues, a municipality in the district of Jura-Nord vaudois, Vaud, Switzerland. The plant serves a population of 1,122 and operates with advanced treatment processes, ensuring high-quality effluent. Its designed capacity is 1,875 m³/day, with a current discharge volume of 509.30 m³/day. As a Swiss facility, BALLAIGUES adheres to the national water protection ordinance (Gewässerschutzverordnung), which mandates stringent treatment standards for all wastewater discharges. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive water bodies. The plant's scale corresponds to a small agglomeration, and Swiss regulations require such plants to meet high effluent quality standards. The treated effluent from BALLAIGUES is discharged into the local watershed, which ultimately drains into the Orbe River and then into the Rhône River basin. The Rhône flows through Lake Geneva (Lac Léman) before continuing to the Mediterranean Sea. The plant plays a crucial role in protecting the water quality of these downstream ecosystems, supporting aquatic life and recreational uses.

The BALLAIGUES plant discharges into the local watershed that feeds the Orbe River, a tributary of the Rhône River. The Rhône flows through Lake Geneva, a large alpine lake with significant ecological and economic importance, before reaching the Mediterranean Sea. The advanced treatment at BALLAIGUES helps minimize nutrient loading and protects the sensitive aquatic habitats of the Orbe and Rhône rivers, as well as Lake Geneva, which supports diverse fish populations and serves as a drinking water source.