KWILCZ Wastewater Treatment Plant, Kwilcz | Secondary Treatment, Poland

KWILCZ is a municipal wastewater treatment plant located in the village of Kwilcz, within the Greater Poland Voivodeship (województwo wielkopolskie) in western Poland. The facility serves a population of 1,854, classifying it as a small agglomeration under Polish and EU regulations. The plant is situated in a rural area, with the nearest major city being Międzychód. The plant provides 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 3,000 m³/day, and the current discharge volume is 264.35 m³/day, indicating operational headroom. As a Polish facility, it operates under the national Water Law Act and is subject to permits issued by the Regional Water Management Board (RZGW). The treated effluent is discharged into local surface waters, which ultimately drain into the Warta River basin and then to the Oder River, flowing into the Baltic Sea. The plant plays a key role in protecting local water quality and supporting the ecological health of the region's rivers and groundwater.

The plant discharges into a local watercourse that is part of the Warta River basin, a major tributary of the Oder River. The Oder flows into the Baltic Sea via the Szczecin Lagoon. The region's watershed supports diverse aquatic life and is important for migratory fish species. The plant's secondary treatment helps reduce nutrient loads, mitigating eutrophication risks in downstream waters.