COV Velesin stabilizacni nadrz - Advanced Wastewater Treatment in Markvartice, Czech Republic

COV Velesin stabilizacni nadrz is an advanced wastewater treatment plant located near Markvartice in the Jihočeský kraj region of the Czech Republic. The plant serves a population of approximately 4,500 people and has a designed capacity of 6,200 m³/day, with a current discharge volume of 732.49 m³/day. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. As a facility in the Czech Republic, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for discharges into sensitive areas. For agglomerations of this size (4,504 PE), the directive mandates secondary treatment as a minimum, and advanced treatment is required if the receiving water is sensitive. The treated effluent is discharged into local watercourses that ultimately drain into the Vltava River basin, part of the Elbe River system flowing to the North Sea. The plant plays a key role in protecting the region's water quality and supporting the ecological health of downstream aquatic habitats.

The plant discharges into local streams that feed into the Vltava River, a major tributary of the Elbe River, which flows through Germany to the North Sea. The Vltava basin supports diverse aquatic life and is an important ecological corridor in Central Europe. The advanced treatment helps reduce nutrient loading, protecting downstream water bodies from eutrophication and maintaining biodiversity.