COV Mirosov Wastewater Treatment Plant, Dobřív, Plzeň Region

COV Mirosov is a municipal wastewater treatment plant located in Dobřív, a village in the Rokycany District of the Plzeň Region, Czech Republic. The plant serves a population of approximately 1,586 people, classifying it as a small agglomeration under EU standards. It operates as part of the regional water infrastructure managed by local authorities. The plant provides secondary treatment, which is the minimum required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for freshwater discharges from agglomerations of this size. The designed capacity is 3,300 m³/day, with an average daily discharge volume of about 590 m³, indicating operational headroom. Treated effluent from COV Mirosov is discharged into local streams that flow into the Berounka River, a major tributary of the Vltava River, which ultimately drains into the Elbe River and the North Sea. The plant plays a key role in protecting the Berounka's water quality, supporting aquatic life and downstream ecosystems in the Elbe basin.

The plant discharges into small watercourses within the Berounka River watershed, part of the larger Elbe River basin that drains to the North Sea. The Berounka River supports diverse fish populations and is used for recreation and drinking water abstraction downstream. The region's moderate climate and forested landscape contribute to seasonal flow variations, making consistent treatment important for maintaining ecological balance.