Kownaty Wastewater Treatment Plant: Secondary Treatment for 1,669 People in Wielkopolskie

The Kownaty wastewater treatment plant is located in the village of Kownaty, within the gmina Wilczyn, powiat koniński, województwo wielkopolskie, Poland. It serves a population of 1,669, classifying it as a small agglomeration under Polish and EU regulations. The plant is situated inland, away from coastal areas, and its operations are part of the local municipal wastewater infrastructure. The plant provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for freshwater discharges from agglomerations of this size. Its designed capacity of 9,033 m³/day significantly exceeds the current discharge volume of 237.97 m³/day, indicating substantial reserve capacity. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The treated effluent is discharged into local watercourses that ultimately 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 watershed from untreated sewage, supporting water quality in the region's rivers and downstream ecosystems.

The Kownaty plant discharges into local streams that feed into the Warta River, a major right-bank tributary of the Oder River. The Oder flows northward to the Baltic Sea, passing through ecologically sensitive areas such as the Lower Oder Valley. The plant's secondary treatment helps reduce nutrient loads, which is important for preventing eutrophication in the Baltic Sea, a water body already under pressure from agricultural and urban runoff.