1 Brzeznica Wastewater Treatment Plant, Zawada, Podkarpackie, Poland

1 Brzeznica is a wastewater treatment plant located in Zawada, within the gmina Dębica, powiat dębicki, in the Podkarpackie Voivodeship of Poland. The plant serves a population of about 7,382 people, placing it in the category of a small to medium agglomeration under Polish and EU regulations. As a Polish wastewater facility, 1 Brzeznica operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size unless the receiving waters are designated as sensitive areas. The regulatory framework ensures compliance with national standards enforced by Polish water authorities. The treated effluent from the plant is discharged into local watercourses that ultimately drain into the Vistula River basin, which flows northward into the Baltic Sea. The plant plays a key role in protecting the region's surface waters from pollution, supporting aquatic life and downstream ecosystems in the Podkarpackie region.

The plant discharges into the local watershed, which is part of the Vistula River basin. The Vistula flows through central Poland and empties into the Baltic Sea near Gdańsk. The downstream environment includes diverse aquatic habitats that support fish, macroinvertebrates, and migratory bird species. Protecting water quality in this basin is critical for maintaining ecological balance and meeting EU Water Framework Directive objectives.