Kleczew Wastewater Treatment Plant - Small Agglomeration in Wielkopolskie, Poland

The Kleczew wastewater treatment plant is located in Białobród-Kolonia, near the town of Kleczew in województwo wielkopolskie, Poland. It serves a population of 1,503, classifying it as a small agglomeration under Polish and EU regulations. The plant is part of the municipal infrastructure managed by the local authorities. The plant operates with secondary treatment, which is the minimum standard required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The designed capacity is 5,600 m³/day, with a current discharge volume of 214.30 m³/day, indicating significant spare capacity. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The treated effluent is discharged into local watercourses that eventually drain into the Warta River basin, a major tributary of the Oder River, which flows into the Baltic Sea. The plant plays a key role in protecting the local aquatic environment from untreated sewage, supporting water quality in the region's rivers and groundwater.

The plant discharges into local streams that feed into the Warta River, a major tributary of the Oder River. The Oder flows into the Baltic Sea, making this plant part of a transboundary river basin. The region's watershed supports diverse aquatic life and is important for agriculture and drinking water. Secondary treatment helps reduce nutrient loads, which is critical for preventing eutrophication in downstream water bodies.