COV Kaznejov Wastewater Treatment Plant, Kaznějov, Czech Republic

COV Kaznejov is a municipal wastewater treatment plant located in Kaznějov, within the Plzeňský kraj region of the Czech Republic. The plant serves a population of approximately 2,309 residents, classifying it as a small agglomeration under EU classification. It is situated inland, away from coastal areas, and treats wastewater from the local community. The plant provides secondary treatment, which is the minimum required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The designed capacity is 3,150 m³/day, with a current discharge volume of 531.89 m³/day, indicating operational headroom. As a Czech facility, it operates under national regulations that transpose EU directives, ensuring compliance with effluent standards for organic matter and suspended solids. The treated effluent is discharged into a local watercourse that eventually drains into the Berounka River, a tributary of the Vltava River, which flows into the Elbe and ultimately the North Sea. The plant plays a key role in protecting the water quality of these rivers and the downstream aquatic ecosystem, supporting biodiversity and recreational uses.

The plant discharges into a local stream that feeds into the Berounka River, part of the Elbe basin. The Berounka flows through the Plzeňský kraj region and joins the Vltava near Prague, eventually reaching the North Sea. The downstream environment supports diverse aquatic life, including fish species such as brown trout and grayling, and the river is used for recreation. The plant's secondary treatment helps reduce nutrient and organic pollution, protecting the ecological health of this river system.