OS Wojkowice Wastewater Treatment Plant, Wojkowice, Silesian Voivodeship

OS Wojkowice is a wastewater treatment plant located in Wojkowice, within the Silesian Voivodeship of southern Poland. The facility serves a population of approximately 4,067 residents, classifying it as a small agglomeration under EU regulations. It operates as part of the municipal infrastructure in the Górnośląsko-Zagłębiowska Metropolia, an urban-industrial area. The plant provides advanced treatment, which goes beyond the EU Urban Waste Water Treatment Directive's minimum requirement of secondary treatment for agglomerations of this size. Advanced treatment typically includes nutrient removal, reducing nitrogen and phosphorus loads to protect sensitive water bodies. The plant has a designed capacity of 7,500 m³/day and currently discharges about 579.89 m³/day of treated effluent. The treated wastewater from OS Wojkowice is discharged into local streams that flow into the Brynica River, a tributary of the Przemsza River, which eventually joins the Vistula River and drains into the Baltic Sea. The plant plays a key role in safeguarding water quality in this densely populated and industrialized region, helping to reduce pollution in the Vistula basin and the Baltic Sea.

The plant discharges into the Brynica River catchment, part of the Vistula River basin that flows northward to the Baltic Sea. This region is heavily urbanized and industrialized, placing pressure on water quality. Advanced treatment at OS Wojkowice helps reduce nutrient loads, protecting downstream aquatic ecosystems and supporting biodiversity in the Vistula estuary and Baltic coastal waters.