Kujawka Wastewater Treatment Plant, Krotoszyn, Kuyavian-Pomeranian Voivodeship

Kujawka is a wastewater treatment plant located in Krotoszyn, a village in the Kuyavian-Pomeranian Voivodeship of Poland. The plant serves a population of 1,195, classifying it as a small agglomeration under Polish and EU regulations. It operates as part of the municipal wastewater infrastructure for the local community. The plant provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for freshwater discharges from agglomerations of this size. The design capacity is 604 m³ per day, with an average daily discharge of 170.39 m³, indicating operational headroom. The plant is not located near the coast, reducing direct marine impact. Treated effluent from Kujawka is discharged into local watercourses that ultimately drain into the Vistula River basin, which flows into the Baltic Sea. The plant plays a key role in protecting the region's surface water quality and supporting the ecological health of downstream aquatic habitats.

Kujawka discharges into the local river network within the Vistula basin, which flows northward to the Baltic Sea. The region's watershed supports diverse aquatic life and is part of an important migratory corridor for fish. The plant's secondary treatment helps reduce organic pollution and nutrient loads, contributing to the ecological balance of downstream water bodies.