Sztumskie Pole Wastewater Treatment Plant, Szembruk, Poland

Sztumskie Pole is a wastewater treatment plant located in Szembruk, within the gmina Rogóźno, powiat grudziądzki, województwo kujawsko-pomorskie, Poland. The plant serves a population equivalent of approximately 29,495, classifying it as a medium-sized agglomeration under Polish and EU regulations. As a Polish facility, Sztumskie Pole operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The plant's treatment processes and capacity are aligned with national standards, ensuring compliance with discharge limits for organic matter and nutrients. The treated effluent from Sztumskie Pole is discharged into local watercourses that ultimately drain into the Vistula River basin and the Baltic Sea. The plant plays a key role in protecting the region's water quality and supporting downstream ecosystems, including the sensitive coastal waters of the Baltic.

The plant discharges into local streams that flow into the Vistula River, which empties into the Baltic Sea. The Baltic Sea is a semi-enclosed brackish sea with limited water exchange, making it sensitive to nutrient pollution. The plant's operations help reduce the load of nitrogen and phosphorus entering the Baltic, supporting efforts to combat eutrophication in this ecologically important water body.