Zaklików Wastewater Treatment Plant - Podkarpackie, Poland

The Zaklików wastewater treatment plant is located in the village of Belkowszczyzna, within the gmina of Zaklików, in powiat stalowowolski, województwo podkarpackie, Poland. It serves a population of 2,255, 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 freshwater discharges from agglomerations of this size. The plant has a designed capacity of 3,946 cubic meters per day and currently treats an average daily flow of 321.53 cubic meters, indicating substantial reserve capacity. The treated effluent is discharged into a local watercourse that ultimately drains into the Vistula River basin, which flows northward to the Baltic Sea. The plant plays a key role in protecting local streams and the broader Vistula catchment from nutrient and organic pollution.

The plant discharges into a small tributary of the San River, which is part of the Vistula River basin. The Vistula flows through central Poland and empties into the Baltic Sea via the Gulf of Gdańsk. The downstream environment includes ecologically sensitive areas such as floodplain forests and wetlands that support diverse aquatic life and migratory bird species. Nutrient loading from wastewater can contribute to eutrophication in the Baltic Sea, making effective treatment at inland plants like Zaklików important for regional water quality.