Oborniki Wastewater Treatment Plant, Uścikówiec, Greater Poland Voivodeship

The Oborniki wastewater treatment plant is located in Uścikówiec, within the Oborniki commune in the Greater Poland Voivodeship (województwo wielkopolskie), Poland. It serves a population of approximately 30,821, classifying it as a medium-sized agglomeration under EU regulations. As a Polish facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations with a population equivalent (PE) between 10,000 and 150,000. For larger agglomerations or discharges to sensitive areas, tertiary treatment may be mandated. The regulatory framework ensures compliance with national and EU standards. The plant discharges treated wastewater into local water bodies that ultimately drain into the Warta River basin, a major tributary of the Oder River, which flows into the Baltic Sea. The surrounding region is characterized by agricultural and rural landscapes, and the plant plays a key role in protecting local water quality and downstream ecosystems.

The Oborniki plant discharges into the Warta River basin, which flows into the Oder River and eventually reaches the Baltic Sea. The region supports diverse aquatic life and is part of an important migratory corridor for fish species. The plant's treatment processes help reduce nutrient loads and protect downstream water quality in this ecologically sensitive watershed.