Wagrowiec Wastewater Treatment Plant, Łęgowo, Poland

The Wagrowiec wastewater treatment plant is located in Łęgowo, within the gmina of Wągrowiec in the wielkopolskie province of Poland. It serves a population of about 19,026, classifying it as a medium-sized agglomeration under EU regulations. The plant is situated inland, away from coastal areas, and its operations are part of the regional water management infrastructure. As a Polish facility, the plant is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations with a population equivalent (PE) between 10,000 and 150,000. For sensitive areas, tertiary treatment may be mandated. The plant's treatment processes and capacity are designed to meet these standards, ensuring compliance with national and EU water quality objectives. The treated effluent is discharged into local water bodies that ultimately drain into the Baltic Sea via the Warta River and Oder River systems. The plant plays a key role in protecting the region's surface waters from nutrient pollution, supporting aquatic life and downstream ecosystems. Its operation contributes to the ecological health of the Wielkopolska region's rivers and lakes.

The plant discharges into local watercourses that are part of the Warta River basin, which flows into the Oder River and eventually reaches the Baltic Sea. This watershed supports diverse aquatic habitats and is important for migratory fish species. The region's agricultural activity makes nutrient removal a key environmental consideration to prevent eutrophication in downstream waters.