PILZNO Wastewater Treatment Plant, Pilzno | Podkarpackie, Poland

The PILZNO wastewater treatment plant is located in the town of Pilzno, within the gmina of Pilzno in powiat dębicki, Podkarpackie Voivodeship, Poland. The facility serves a population of about 7,000 residents, making it a small to medium-sized municipal plant in southeastern Poland. The plant provides secondary treatment, which is the standard biological treatment stage required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The designed capacity of the plant is 5,880 cubic meters per day, and the reported discharge volume is 996 cubic meters per day, indicating operational capacity well within design limits. The treated effluent is discharged into local waterways that ultimately drain into the Wisłoka River, a tributary of the Vistula River, which flows into the Baltic Sea. The plant plays a key role in protecting the local aquatic environment from untreated sewage, supporting water quality in the region's rivers and downstream ecosystems.

The plant discharges into the Wisłoka River basin, which flows northward to join the Vistula River near Dębica. The Vistula then continues to the Baltic Sea via the Gdańsk Bay. The Wisłoka supports diverse aquatic life and is an important migratory corridor for fish species. The region's moderate climate and agricultural land use make nutrient removal from wastewater critical to prevent eutrophication in downstream waters.