Staszow Wastewater Treatment Plant, Staszów, Poland

The Staszow wastewater treatment plant is located in Staszów, within the świętokrzyskie province of Poland. It serves a population of approximately 6,702, classifying it as a small to medium agglomeration under EU regulations. The plant is situated inland, away from coastal areas, and its operations are integral to local water management. The facility provides advanced treatment, which goes beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The designed capacity of 63,200 m³/day indicates significant infrastructure, while the current discharge volume of 955.6 m³/day suggests ample reserve capacity. The plant's advanced treatment level likely includes nutrient removal to protect sensitive water bodies. The treated effluent is discharged into local watercourses that eventually drain into the Vistula River basin, which flows into the Baltic Sea. This downstream connection underscores the plant's role in reducing nutrient loads and protecting the Baltic Sea from eutrophication. The advanced treatment helps meet Poland's obligations under the Helsinki Convention for Baltic Sea protection.

The plant discharges into local streams that are part of the Vistula River basin, ultimately reaching the Baltic Sea. This watershed supports diverse aquatic life and is an important ecological corridor. The advanced treatment helps mitigate nutrient pollution, which is critical for preventing eutrophication in the Baltic Sea, a semi-enclosed sea sensitive to nitrogen and phosphorus loads.