Blankowa Wastewater Treatment Plant, Sompolno, Poland

Blankowa is a wastewater treatment plant located in Błankowa, near Sompolno, in the wielkopolskie province of Poland. It serves a population of 1,651 people, 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 region's municipal wastewater infrastructure. The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The designed capacity is 5,000 m³/day, and the current discharge volume is 235.41 m³/day, indicating ample capacity for future growth. As a Polish facility, it operates under national regulations that transpose EU directives, with permits issued by the relevant regional water authority. 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 watershed from untreated sewage, supporting water quality in the region's rivers and downstream ecosystems.

The plant discharges into local streams that are part of the Warta River basin, which flows into the Oder River and ultimately the Baltic Sea. The region's watershed supports diverse aquatic life and is important for migratory fish species. By providing secondary treatment, the plant helps reduce nutrient loads and organic pollution, safeguarding the ecological health of downstream water bodies.