Czarna Wastewater Treatment Plant - Secondary Treatment in Podkarpackie, Poland

Czarna wastewater treatment plant is located in the village of Czarna, within gmina Czarna, powiat dębicki, in the podkarpackie province of southeastern Poland. The plant serves a small population of approximately 1,096 residents, reflecting its role in a rural community. It is operated under the municipal wastewater infrastructure of the region. 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 directive mandates secondary treatment for all discharges from agglomerations with a population equivalent (PE) above 2,000, but smaller plants like Czarna may also apply secondary treatment to meet local environmental standards. The plant's design capacity is 1,697 m³/day, and it currently treats an average daily flow of 156.27 m³/day. The treated effluent is discharged into local watercourses that eventually drain into the Wisłoka River, a tributary of the Vistula River, which flows into the Baltic Sea. The plant's operation helps protect the local watershed and downstream aquatic ecosystems from untreated wastewater pollution, supporting water quality in the region.

Czarna lies within the drainage basin of the Wisłoka River, a right-bank tributary of the Vistula River. The Vistula flows northward through Poland and discharges into the Baltic Sea via the Gdańsk Bay. The local watershed supports diverse aquatic life and is part of a broader ecological network that includes forested areas and agricultural lands. The plant's secondary treatment reduces organic load and suspended solids, helping to maintain the ecological health of the receiving waters and downstream environments.