Nysa Wastewater Treatment Plant: Serving Nysa, Opole Voivodeship, Poland

The Nysa wastewater treatment plant is located in the city of Nysa, within Opole Voivodeship in southwestern Poland. It serves a population of around 38,500 people, classifying it as a medium-sized agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). The plant is situated near the Nysa Kłodzka River, a tributary of the Oder River, which ultimately flows into the Baltic Sea. As a Polish facility, the plant operates under the EU UWWTD (91/271/EEC), which requires secondary treatment for agglomerations of this size. Poland has implemented this directive through national regulations, and plants serving over 10,000 population equivalent (PE) must meet secondary treatment standards. It is expected to comply with these regulatory requirements. The treated effluent is discharged into the Nysa Kłodzka River, which flows into the Oder River and then to the Baltic Sea. This water body supports diverse aquatic life and is part of a larger river system that provides habitat for fish species such as pike and perch. The plant plays a key role in protecting water quality in the Oder basin and the Baltic Sea ecosystem.

The Nysa plant discharges into the Nysa Kłodzka River, a tributary of the Oder River, which flows into the Baltic Sea via the Szczecin Lagoon. The Oder basin supports diverse aquatic ecosystems, including fish spawning grounds and migratory corridors. The Baltic Sea is a sensitive brackish environment affected by nutrient pollution, making effective wastewater treatment crucial for reducing eutrophication risks.