GRBoW Wastewater Treatment Plant, Grębów, Podkarpackie, Poland

GRBoW is a wastewater treatment plant located in Grębów, a village in the Podkarpackie Voivodeship of southeastern Poland. The plant served a population of 2,512, placing it in the small agglomeration category under Polish and EU regulations. It is currently closed, with its operational status listed as closed. The plant provided secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Its designed capacity was 10,000 m³/day, though actual discharge volume was 358.17 m³/day. The plant's closure may reflect consolidation of wastewater services in the region. The treated effluent from GRBoW likely discharged into a local watercourse within the Vistula River basin, which drains into the Baltic Sea. The plant's operation contributed to protecting local water quality in the San River sub-basin, supporting aquatic ecosystems and downstream communities.

GRBoW discharged into a local tributary of the Vistula River, Poland's longest river, which flows into the Baltic Sea. The surrounding area is part of the Sandomierz Basin, a region with mixed agricultural and forested landscapes. The plant's secondary treatment helped reduce organic pollutants and nutrients, protecting downstream aquatic habitats and supporting biodiversity in the Vistula delta ecosystem.