COV Sadska Wastewater Treatment Plant, Sadská, Central Bohemia

COV Sadska is a municipal wastewater treatment plant located in Sadská, a town in the Central Bohemian Region of the Czech Republic. The plant serves a population of approximately 3,890 people, classifying it as a small agglomeration under Czech and EU regulations. It is situated near the Mrslinská cesta road, within the district of Nymburk. The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The plant has a designed capacity of 5,066 m³/day and currently discharges a daily volume of 539 m³. As a secondary treatment facility, it removes organic matter and suspended solids, meeting the directive's requirements for discharges into freshwater bodies. The treated effluent is discharged into local watercourses that ultimately drain into the Elbe River basin, which flows through the Czech Republic and Germany into the North Sea. The plant plays a key role in protecting the water quality of the Elbe catchment, supporting aquatic life and downstream ecosystems.

The plant discharges into the Elbe River basin, which flows northward through the Czech Republic and Germany before reaching the North Sea. The Elbe is a major European river supporting diverse aquatic habitats and migratory fish species. The secondary treatment provided by COV Sadska helps reduce nutrient and organic pollution, contributing to the ecological health of the river system and the downstream marine environment.