Ilok Wastewater Treatment Plant, Ilok | Croatia

The Ilok wastewater treatment plant is located in the town of Ilok, in the Vukovarsko-srijemska županija of eastern Croatia, near the border with Serbia. The plant serves the local population as part of the municipal wastewater infrastructure. As a secondary treatment facility, Ilok provides biological treatment to reduce organic pollutants. With a designed capacity of 8,000 cubic meters per day, the plant is sized for the town's needs. Under Croatian and EU regulations, secondary treatment is the standard for inland agglomerations of this scale, in line with the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant's treated effluent is discharged into the Danube River basin, which flows into the Black Sea. The Danube is a major European waterway supporting diverse aquatic life and providing water for communities downstream. Proper treatment helps protect the river's ecological health.

The Ilok plant discharges into the Danube River basin, which drains into the Black Sea. The Danube supports a rich ecosystem, including migratory fish species and diverse aquatic habitats. The plant's secondary treatment reduces organic load and nutrients, helping to maintain water quality in this internationally important river system.