Niegoszowice Wastewater Treatment Plant, Lesser Poland | Secondary Treatment

Niegoszowice wastewater treatment plant is located in the village of Niegoszowice, within gmina Zabierzów, powiat krakowski, in the Lesser Poland Voivodeship (województwo małopolskie). The plant serves a population of approximately 4,465, classifying it as a small agglomeration under Polish and EU regulations. It operates as a municipal facility, treating wastewater from the local community. The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size discharging into freshwater. The designed capacity is 5,500 m³/day, and the current discharge volume is 636.64 m³/day, indicating ample reserve capacity. As a Polish facility, it operates under national water law permits issued by the Regional Water Management Board (RZGW) in Kraków, ensuring compliance with EU standards. The treated effluent is discharged into a local watercourse that ultimately drains into the Vistula River basin, which flows northward to the Baltic Sea. The plant plays a key role in protecting the local aquatic environment and downstream ecosystems, including the Vistula's diverse fish populations and riparian habitats.

The plant discharges into a small tributary of the Rudawa River, which flows into the Vistula River near Kraków. The Vistula is Poland's longest river and drains into the Baltic Sea via the Gdańsk Bay. The downstream environment supports diverse aquatic life, including migratory fish species such as salmon and eel, and the river corridor provides important habitat for birds and mammals. The plant's secondary treatment helps reduce nutrient loading, protecting the Vistula from eutrophication.