COV Nepomuk Wastewater Treatment Plant, Klášter, Plzeňský kraj

COV Nepomuk is a municipal wastewater treatment plant located in Klášter, a settlement near Nepomuk in the Plzeňský kraj region of the Czech Republic. The plant serves a population of approximately 1,669 people and has a designed capacity of 7,500 cubic meters per day, with an average discharge volume of 404.21 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. The directive mandates secondary treatment for all discharges from agglomerations with a population equivalent (PE) above 2,000, and COV Nepomuk, serving 1,669 people, falls just below this threshold but still meets the treatment level expected for smaller communities in the Czech Republic. The treated effluent is discharged into a local watercourse that ultimately drains into the Úslava River, a tributary of the Berounka River, which flows into the Vltava River and then the Elbe River before reaching the North Sea. The plant plays a key role in protecting the water quality of these downstream rivers and the sensitive aquatic ecosystems they support.

COV Nepomuk discharges treated wastewater into a local stream that feeds into the Úslava River, a tributary of the Berounka River. The Berounka joins the Vltava, which flows into the Elbe River and eventually reaches the North Sea. This watershed supports diverse aquatic life and is an important ecological corridor in the region. The plant's secondary treatment helps reduce organic pollution and nutrient loads, protecting downstream water quality and habitats.