COV Jirny Wastewater Treatment Plant, Nové Jirny, Central Bohemian Region

COV Jirny is a municipal wastewater treatment plant located in Nové Jirny, a village in the Central Bohemian Region (Středočeský kraj) of the Czech Republic. The plant serves a population of approximately 6,208 people and is part of the region's wastewater infrastructure managed under Czech national regulations, which transpose the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant provides secondary treatment, which is the standard required for agglomerations of this size under the EU directive. It has a designed capacity of 3,200 m³/day and processes an average daily discharge volume of 472 m³, indicating ample reserve capacity. Secondary treatment typically involves biological processes such as activated sludge or trickling filters. The treated effluent is discharged into local watercourses that drain into the Elbe River basin, ultimately reaching the North Sea. The plant plays a key role in protecting the local environment by reducing organic pollutants and nutrients before discharge, supporting water quality in the region's streams and rivers.

The plant discharges into the local watershed, which is part of the Elbe River basin. The Elbe flows through the Czech Republic and Germany before emptying into the North Sea. The downstream environment includes agricultural areas and small water bodies that benefit from reduced nutrient loads. The region's water bodies support diverse aquatic life, and the plant's secondary treatment helps maintain ecological balance.