Dolice Wastewater Treatment Plant, Dolice, West Pomeranian Voivodeship, Poland

The Dolice wastewater treatment plant is located in Dolice, a town in the West Pomeranian Voivodeship of northwestern Poland. The facility serves a population of approximately 5,820, placing it in the small-to-medium agglomeration category under Polish and EU regulations. The plant provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The designed capacity of 9,402 m³/day indicates the plant is sized to accommodate future growth, while current discharge volume is 829.84 m³/day, suggesting ample reserve capacity. The treated effluent is discharged into a local watercourse, which ultimately drains into the Oder River basin and then into the Baltic Sea. The plant plays a key role in protecting local surface waters from nutrient pollution, supporting the ecological health of the region's rivers and the sensitive Baltic Sea ecosystem.

The plant discharges into a small watercourse that flows into the Ina River, a tributary of the Oder River. The Oder drains into the Szczecin Lagoon and then the Baltic Sea. The Baltic Sea is a semi-enclosed, brackish sea highly sensitive to eutrophication from nutrient inputs. The plant's secondary treatment helps reduce organic load and nutrients, contributing to the protection of downstream aquatic habitats and the overall health of the Baltic ecosystem.