Belisce Wastewater Treatment Plant, Belišće, Croatia

The Belisce wastewater treatment plant is located in Belišće, a town in Osijek-Baranja County, eastern Croatia. The facility provides secondary treatment for municipal wastewater, serving the local population as part of the region's sanitation infrastructure. With a designed capacity of 240,000 cubic meters per day, the plant is sized to handle the wastewater generated by the community. As a Croatian facility, it operates under the national implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for all agglomerations above 2,000 population equivalent discharging into freshwater. The plant's treated effluent likely discharges into the Drava River, a major tributary of the Danube, which flows into the Black Sea. This connection makes the plant's treatment performance important for the ecological health of the Drava-Danube river system and the downstream Black Sea ecosystem.

The Belisce plant is situated inland, approximately 50 km from the Drava River, which flows into the Danube and ultimately the Black Sea. The local watershed supports diverse aquatic life and is part of an important migratory corridor for fish species. Effective secondary treatment helps reduce nutrient and organic pollution, protecting downstream water quality and the ecological balance of the Danube basin.