Wasosz Wastewater Treatment Plant, Wąsosz | Advanced Treatment Facility

The Wasosz wastewater treatment plant is located in Wąsosz, a town in the Lower Silesian Voivodeship of Poland. The facility serves a population of approximately 4,256 residents, placing it in the small agglomeration category under Polish and EU regulations. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 8,320 m³/day and an actual discharge volume of 606.84 m³/day, the plant operates well below its capacity, indicating potential for future growth. The treated effluent is discharged into a local water body, which eventually drains into the Oder River basin and ultimately reaches the Baltic Sea. The advanced treatment level helps protect the sensitive aquatic environment of the region, supporting biodiversity and water quality downstream.

The plant's discharge contributes to the Oder River basin, which flows into the Szczecin Lagoon and then the Baltic Sea. The Baltic Sea is a brackish, semi-enclosed sea with limited water exchange, making it sensitive to nutrient pollution. Advanced treatment at this plant reduces nutrient loads, helping to mitigate eutrophication risks in the downstream environment.