OS Wschod Wastewater Treatment Plant, Kobiór, Poland

OS Wschod is a wastewater treatment plant located in Kobiór, within the Silesian Voivodeship of Poland. The plant serves a small community of 1,395 people, reflecting its role in managing domestic wastewater for this rural area. As part of Poland's wastewater infrastructure, it contributes to the protection of local water resources. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Secondary treatment effectively removes organic matter and suspended solids, ensuring that the effluent meets quality standards before discharge. The plant has a designed capacity of 1,916 cubic meters per day, with an actual discharge volume of 198.91 cubic meters per day, indicating it operates well below its capacity. Treated effluent from OS Wschod is discharged into local water bodies that eventually drain into the Vistula River basin, which flows into the Baltic Sea. The plant plays a key role in safeguarding the ecological health of these waters, supporting aquatic life and preventing nutrient pollution in downstream environments.

The plant discharges into local streams that are part of the Vistula River basin, which ultimately drains into the Baltic Sea. This region supports diverse aquatic ecosystems, including fish and macroinvertebrate communities. The secondary treatment provided by OS Wschod helps reduce organic pollutants and nutrients, mitigating eutrophication risks in the Baltic Sea.