POLIEZ PITTET Wastewater Treatment Plant, Poliez-Pittet, Vaud, Switzerland

POLIEZ PITTET is a wastewater treatment plant located in Poliez-Pittet, a municipality in the Gros-de-Vaux district of Vaud, Switzerland. The plant serves a small population of 374 residents, reflecting its role in a rural community. It is situated inland, more than 10 km from the coast. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 875.00 m³/day and a current discharge volume of 169.77 m³/day, the plant operates well below its capacity, indicating room for future growth. As a Swiss facility, it operates under the Swiss Water Protection Act (Gewässerschutzgesetz), which mandates strict effluent standards for all treatment plants. The treated effluent from POLIEZ PITTET is discharged into local watercourses that eventually drain into the Rhone River basin and ultimately the Mediterranean Sea. The advanced treatment ensures minimal environmental impact on the receiving waters, protecting aquatic ecosystems and supporting downstream water quality in the region.

The plant discharges into local streams that are part of the Rhone River basin, which flows into Lake Geneva and then the Mediterranean Sea. The advanced treatment level helps protect sensitive aquatic habitats in the region, including those supporting diverse fish populations and migratory birds. The plant's inland location reduces direct marine impact, but its effluent contributes to the overall water quality of the Rhone watershed.