Staniszcze Male Wastewater Treatment Plant, Staniszcze Małe, Opole Voivodeship

Staniszcze Male is a wastewater treatment plant located in the village of Staniszcze Małe, within the Opole Voivodeship of southern Poland. The facility serves a population of approximately 3,141 residents, classifying it as a small agglomeration under Polish and EU regulations. The plant provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for inland freshwater discharges from agglomerations of this size. The plant's designed capacity of 8,070 m³/day indicates it has significant reserve capacity relative to its current discharge volume of 447.86 m³/day. The treated effluent is discharged into local watercourses that ultimately drain into the Oder River basin, which flows northward to the Baltic Sea. The plant plays a key role in protecting local streams and groundwater from untreated sewage, supporting the ecological health of the region's aquatic ecosystems.

The plant discharges into the Oder River catchment, which flows through southwestern Poland and empties into the Szczecin Lagoon and the Baltic Sea. The Oder basin supports diverse aquatic life and is an important migratory corridor for fish. The region's mixed agricultural and forested landscape means nutrient removal is important to prevent eutrophication in downstream waters.