Okulice Wastewater Treatment Plant, Dębina, Poland

Okulice wastewater treatment plant is located in Dębina, within the gmina Rzezawa in the małopolskie province of Poland. It serves a small population of 472 people, reflecting its role as a local facility for a rural community. The plant is situated inland, away from coastal areas, and operates under Polish regulations that implement the EU Urban Waste Water Treatment Directive. The plant provides secondary treatment, which is the standard level required under the EU Urban Waste Water Treatment Directive for agglomerations of this size. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The plant has a designed capacity of 2,880 m³/day and currently discharges 67.30 m³/day of treated wastewater, indicating it operates well below its capacity. The treated effluent from Okulice is discharged into local watercourses that eventually drain into the Vistula River basin, which flows northward to the Baltic Sea. The plant plays a key role in protecting local streams and groundwater from untreated sewage, supporting the ecological health of the region's waterways and the downstream environment.

Okulice plant discharges into local tributaries of the Vistula River, which flows through southern Poland to the Baltic Sea. The surrounding region is part of the Vistula basin, supporting diverse aquatic life and agricultural water use. The plant's secondary treatment helps reduce nutrient and organic pollution, protecting downstream ecosystems from eutrophication and maintaining water quality for biodiversity.