Grebocice Wastewater Treatment Plant, Grębocice, Lower Silesia, Poland

The Grebocice wastewater treatment plant is located in the town of Grębocice, within the Lower Silesian Voivodeship of Poland. It serves a population of about 2,099 residents, classifying it as a small agglomeration under Polish and EU regulations. The plant is situated inland, away from coastal areas, and its operations are part of the municipal infrastructure managed by local authorities. As a secondary treatment facility, Grebocice meets the standard requirements set by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The directive mandates secondary treatment for all discharges from populations between 2,000 and 10,000, ensuring effective removal of organic matter and suspended solids. The plant's designed capacity is 5,500 m³/day, with a reported discharge volume of 299.28 thousand m³/year, indicating operational capacity well within design limits. The treated effluent from Grebocice is discharged into local water bodies that eventually drain into the Oder River basin. The Oder River flows northward through Poland and Germany, emptying into the Baltic Sea. This watershed supports diverse aquatic ecosystems and is an important migratory corridor for fish species. The plant's secondary treatment helps protect downstream water quality in this sensitive river basin.

The Grebocice plant discharges into local streams that are part of the Oder River basin. The Oder flows through western Poland and into the Baltic Sea, supporting diverse aquatic life and serving as a key migratory route for fish. The region's watershed is ecologically sensitive, with wetlands and floodplains that provide habitat for birds and amphibians. Secondary treatment at this plant helps reduce nutrient and organic pollution, contributing to the health of the downstream environment.