Kostrzyn nad Odra ulAsfaltowa Wastewater Treatment Plant, Kostrzyn nad Odrą

Kostrzyn nad Odra ulAsfaltowa is a former wastewater treatment plant located in Kostrzyn nad Odrą, in the lubuskie province of western Poland. The plant was designed to serve the municipal wastewater needs of the city and surrounding areas, with a substantial designed capacity of 25,725 cubic meters per day. The plant achieved advanced treatment level, which goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus. This level of treatment is typical for plants discharging into sensitive water bodies under the EU Urban Waste Water Treatment Directive (91/271/EEC). Although the plant is now closed, its design reflects the regulatory standards expected for medium to large agglomerations in Poland. The treated effluent from the plant would have discharged into the local watershed, which ultimately drains into the Oder River. The Oder River flows northward to the Baltic Sea, passing through ecologically important areas. The advanced treatment helped protect downstream water quality and aquatic ecosystems.

The plant's receiving waters are part of the Oder River basin, which flows into the Baltic Sea. The Oder estuary supports diverse aquatic life and is an important migratory corridor for fish. Advanced treatment at the plant would have reduced nutrient loads, helping to mitigate eutrophication in the Baltic Sea, a sensitive marine environment.