COV Zdice Wastewater Treatment Plant, Zdice, Středočeský kraj

COV Zdice is a municipal wastewater treatment plant located in Zdice, a town in the Beroun District of the Středočeský kraj region, Czech Republic. The plant serves a population of approximately 1,981 people and has a designed capacity of 3,000 cubic meters per day, with an average discharge volume of 692.22 m³/day. The plant provides secondary treatment, which is the standard biological treatment stage required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. As a small agglomeration (under 10,000 population equivalent), the directive mandates secondary treatment to reduce organic matter and suspended solids before discharge. The treated effluent is discharged into local watercourses that ultimately drain into the Berounka River, a tributary of the Vltava River, which flows through Prague and joins the Elbe River before reaching the North Sea. The plant plays a key role in protecting the water quality of these rivers and the downstream aquatic ecosystem.

The plant discharges into the Berounka River basin, which is part of the larger Vltava-Elbe system draining to the North Sea. The Berounka River supports diverse aquatic life and is an important recreational and ecological corridor in central Bohemia. Secondary treatment ensures that organic pollutants and suspended solids are reduced, helping to maintain water quality in this sensitive watershed.