Stajkowo Wastewater Treatment Plant, Lubasz, Poland

Stajkowo wastewater treatment plant is located in the village of Bończa, within the gmina Lubasz in województwo wielkopolskie, Poland. The plant serves a population of approximately 3,853 people, placing it in the small agglomeration category under Polish and EU regulations. It is situated inland, away from coastal areas, and its operations are part of the regional water management infrastructure. The plant provides secondary treatment, which is the minimum required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The designed capacity is 2,166 m³/day, and the current discharge volume is 549.38 m³/day, indicating operational headroom. As a Polish facility, it operates under national water law and permits issued by the relevant regional water management authority. 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 into the Baltic Sea via the Szczecin Lagoon. The plant's secondary treatment helps protect these downstream waters from organic pollution and supports aquatic life in the region's rivers and lakes.

The plant discharges into local streams that feed into the Warta River, a key tributary of the Oder River. The Oder flows northward to the Szczecin Lagoon and then into the Baltic Sea. This watershed supports diverse aquatic habitats and is important for migratory fish species. Secondary treatment reduces organic load and helps maintain water quality in the river system, which is ecologically sensitive due to its role in the Baltic Sea catchment.