Szubin Wastewater Treatment Plant - Serving Szubin, Poland

The Szubin wastewater treatment plant is located in the town of Szubin, within the województwo kujawsko-pomorskie region of Poland. The facility serves a population of approximately 9,743 residents, placing it in the medium agglomeration category under EU classification. As a Polish plant, it operates under the national implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size (between 2,000 and 15,000 population equivalent), the directive requires secondary treatment as a minimum standard. The plant's treatment processes are designed to meet these regulatory requirements, ensuring compliance with effluent quality standards. The treated effluent is discharged into local watercourses that ultimately drain into the Baltic Sea via the Vistula River basin. The plant plays a key role in protecting the region's water quality, supporting aquatic ecosystems and preventing nutrient pollution in downstream environments.

The plant discharges into the local watershed, which is part of the Vistula River basin. The Vistula flows northward through Poland and empties into the Baltic Sea via the Vistula Lagoon. This region supports diverse aquatic life and is an important migratory corridor for fish species. Nutrient removal at the plant helps reduce eutrophication risks in the Baltic Sea, a sensitive marine environment.