COV Roudnice nad Labem Wastewater Treatment Plant, Zavadilka, Ústecký kraj

COV Roudnice nad Labem is a municipal wastewater treatment plant located in Zavadilka, a locality near Roudnice nad Labem in the Ústecký kraj region of the Czech Republic. The plant serves a population of approximately 10,167 people, placing it in the medium agglomeration category under Czech and EU regulations. As a plant of this scale in the Czech Republic, it operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size. The plant's treatment processes are designed to meet national standards aligned with EU directives, ensuring effective removal of organic matter and nutrients before discharge. The treated effluent is discharged into the Elbe River (Labe), which flows northward through Germany to the North Sea. The Elbe is a major European waterway supporting diverse aquatic life and providing drinking water for downstream communities. The plant plays a key role in protecting the Elbe's water quality and the broader North Sea ecosystem.

The plant discharges into the Elbe River (Labe), which flows through the Czech Republic and Germany before reaching the North Sea. The Elbe basin supports important fish populations, including migratory species such as salmon and eel. Protecting water quality in this river is critical for maintaining ecological health in the downstream estuary and marine environment.