Oczyszczalnia ul Okrzei 39 - Wastewater Treatment Plant in Ośno Lubuskie, Poland

Oczyszczalnia ul Okrzei 39 is a wastewater treatment facility located in Ośno Lubuskie, a town in the Lubusz Voivodeship of western Poland. The plant serves a population of approximately 1,779, placing it in the small agglomeration category under Polish and EU regulations. The plant provides primary treatment, which involves physical processes such as sedimentation to remove solids. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations of this size are generally required to have secondary treatment, but transitional arrangements or specific local conditions may apply. The designed capacity of 6,428 m³/day suggests the plant was built to accommodate future growth or industrial loads. The treated effluent is discharged into local watercourses that eventually drain into the Oder River basin, which flows northward to the Baltic Sea. The plant plays a key role in protecting the region's surface waters from untreated sewage, supporting aquatic life and downstream water quality in the Oder estuary.

The plant discharges into the Oder River basin, which flows through western Poland and empties into the Szczecin Lagoon and then the Baltic Sea. The Oder is a major European river supporting diverse fish species and migratory birds. The Baltic Sea is a sensitive brackish ecosystem vulnerable to nutrient pollution, making effective wastewater treatment crucial for reducing eutrophication risks in coastal waters.