OS PSzoW Wastewater Treatment Plant, Tworków, Silesian Voivodeship

OS PSzoW is a municipal wastewater treatment plant located in Tworków, within the Silesian Voivodeship of southern Poland. The facility serves a population of 5,234, 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 agglomerations of this size. With a designed capacity of 5,056 m³/day and an actual discharge volume of 746.29 m³/day, the plant operates well below its capacity, indicating potential for future growth. The treated effluent is discharged into local watercourses that ultimately drain into the Odra River basin. The Odra flows northward to the Baltic Sea, passing through ecologically sensitive areas that support diverse aquatic life. The plant's secondary treatment helps protect these downstream environments from organic pollution.

The plant discharges into the Odra River basin, which flows through southwestern Poland and into the Baltic Sea via the Szczecin Lagoon. The Odra supports diverse fish species and migratory birds, and its floodplains provide important habitats. Secondary treatment reduces organic load and suspended solids, mitigating eutrophication risks in the Baltic Sea.