Skalowo Wastewater Treatment Plant: Serving Siekierki Wielkie, Greater Poland

Skalowo wastewater treatment plant is located in Siekierki Wielkie, within the Kostrzyn municipality of the Greater Poland Voivodeship (województwo wielkopolskie). The plant serves a population of around 11,436, classifying it as a medium-sized agglomeration under Polish and EU regulations. Its inland location places it within the Warta River basin, a major tributary of the Oder River. As a Polish facility, Skalowo operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations of this size. The directive also requires more advanced treatment if the receiving waters are designated as sensitive areas. The plant is expected to meet these EU standards to protect local water quality. The treated effluent from Skalowo likely discharges into a local watercourse that flows into the Warta River, which then joins the Oder River before reaching the Baltic Sea. The plant plays a key role in safeguarding the region's surface waters from nutrient pollution, supporting aquatic life and downstream ecosystems in the Oder estuary.

The plant discharges into a local tributary of the Warta River, which flows into the Oder River and ultimately reaches the Baltic Sea. The Warta basin supports diverse freshwater habitats and is an important migratory corridor for fish. The region's agricultural land use means nutrient removal is critical to prevent eutrophication in downstream waters.