Wojnowo Wastewater Treatment Plant, Anieliny, Poland

The Wojnowo wastewater treatment plant is located in Anieliny, within the kujawsko-pomorskie voivodeship of Poland. It serves a population of 2,503, classifying it as a small agglomeration under Polish and EU regulations. The plant is situated inland, away from coastal areas, and plays a key role in managing local wastewater. The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 2,200 m³/day and an actual discharge volume of 356.89 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variability. The treated effluent is discharged into local water bodies that ultimately drain into the Baltic Sea via the Vistula River basin. The plant's operation helps protect the region's surface waters from nutrient pollution, supporting aquatic ecosystems and downstream water quality.

The plant discharges into local streams that are part of the Vistula River basin, which flows northward into the Baltic Sea. The region's watershed supports diverse aquatic life and is important for migratory fish species. Proper wastewater treatment is essential to prevent eutrophication in the Baltic Sea, a sensitive marine environment.