Witobel Wastewater Treatment Plant, Witobel, Poland | Secondary Treatment

Witobel is a municipal wastewater treatment plant located in Witobel, within the gmina of Stęszew in the powiat poznański of województwo wielkopolskie, Poland. The plant serves a population of approximately 6,440, placing it in the small-to-medium agglomeration category under Polish and EU regulations. The facility provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for inland plants serving agglomerations of this size. With a designed capacity of 13,300 m³/day and an actual discharge volume of 918.24 m³/day, the plant operates well below its capacity, indicating potential for future growth or seasonal variations. The treated effluent is discharged into local watercourses that ultimately drain into the Warta River basin, a major tributary of the Oder River. The Oder flows northward into the Baltic Sea, making the plant part of a larger transboundary watershed that supports diverse aquatic ecosystems and is subject to international cooperation under the Oder River Basin management plans.

The plant discharges into the Warta River basin, which flows into the Oder River and then into the Baltic Sea. This watershed supports diverse aquatic life and is an important ecological corridor in Central Europe. The region's agricultural and urban runoff can contribute nutrient loads, making effective secondary treatment critical for preventing eutrophication in downstream water bodies.