COV Stary Plzenec II centralni Wastewater Treatment Plant, Starý Plzenec, Czech Republic

COV Stary Plzenec II centralni is a municipal wastewater treatment plant located in Starý Plzenec, a town in the Plzeňský kraj region of the Czech Republic. The plant serves a population of approximately 3,100 people and is part of the country's centralized wastewater infrastructure. The plant provides secondary treatment, which is the standard biological treatment stage required under Czech and EU regulations. For agglomerations of this size (under 10,000 population equivalent), the EU Urban Waste Water Treatment Directive (91/271/EEC) mandates secondary treatment as a minimum. The plant's designed capacity of 8,000 m³/day indicates it can handle peak flows and future growth. The treated effluent is discharged into the local watershed, which ultimately drains into the Berounka River and then the Vltava River, a major tributary of the Elbe River that flows into the North Sea. The plant plays a key role in protecting water quality in this river system, which supports diverse aquatic life and is used for recreation and drinking water supply downstream.

The plant discharges into the Berounka River basin, which flows into the Vltava River and eventually the Elbe River, draining into the North Sea. This watershed supports diverse aquatic habitats and is important for regional biodiversity. The secondary treatment provided by the plant helps reduce organic pollution and nutrient loads, protecting downstream ecosystems and water quality for human use.