COV Kostelec Lazenska - Secondary Wastewater Treatment Plant in Kostelec nad Černými lesy, Czech Republic

COV Kostelec Lazenska is a wastewater treatment plant located in Kostelec nad Černými lesy, in the Středočeský kraj region of the Czech Republic. The plant provides secondary treatment for a small population, reflecting its role in managing municipal wastewater for this central Bohemian town. As a secondary treatment facility, the plant meets the standards required under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary biological treatment for agglomerations of this scale. The plant has a designed capacity of 500 m³/day, with a current discharge volume of 2.56 m³/day, indicating ample reserve capacity. The treated effluent is discharged into local watercourses that drain into the broader Elbe River basin, ultimately reaching the North Sea. The plant's operation helps protect the region's surface water quality and supports the ecological health of downstream aquatic habitats.

The plant discharges into small streams that feed into the Elbe River basin, which flows through the Czech Republic and Germany before reaching the North Sea. The local watershed supports diverse aquatic life and is part of a densely populated region with agricultural and industrial activity. Effective treatment is essential to prevent nutrient loading and maintain water quality in this sensitive river system.