OzAROWICE Wastewater Treatment Plant, Miasteczko Śląskie, Poland

The OzAROWICE wastewater treatment plant is located in Miasteczko Śląskie, in the Silesian Voivodeship of southern Poland. It serves a population of approximately 3,422 people, classifying it as a small agglomeration under Polish and EU regulations. The plant is situated near the Brynica River, a tributary of the Przemsza, which flows into the Vistula and ultimately to the Baltic Sea. 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. Its designed capacity of 14,061 m³/day suggests it can handle significant hydraulic loads, potentially from industrial sources in the region. The actual discharge volume of 487.92 m³/day indicates current operation well below capacity. The treated effluent is discharged into the Brynica River, which flows through the Silesian industrial region before joining the Przemsza and Vistula. This water body supports diverse aquatic life and is part of the Vistula basin, which drains into the Baltic Sea. The plant's operation helps protect downstream ecosystems from nutrient pollution and organic matter.

The plant discharges into the Brynica River, a tributary of the Przemsza River, which joins the Vistula River. The Vistula flows northward through Poland and empties into the Baltic Sea via the Gdańsk Bay. This watershed supports diverse aquatic habitats and is ecologically sensitive due to industrial and urban pressures in the Silesian region. The plant's secondary treatment reduces organic load and suspended solids, helping to maintain water quality in the Brynica and downstream water bodies.