COV Tremosna Zaluzi Wastewater Treatment Plant, Třemošná, Czech Republic

COV Tremosna Zaluzi is a wastewater treatment plant located in the Záluží area of Třemošná, in the Plzeňský kraj region of the Czech Republic. The plant serves a small population of 261 residents, reflecting its role as a local facility for a rural community. Its location in the Jihozápad region places it within the broader context of Czech water management infrastructure. The plant provides secondary treatment, which is the standard biological treatment level required under Czech and EU regulations for small agglomerations. The EU Urban Waste Water Treatment Directive (91/271/EEC) mandates secondary treatment for discharges into freshwater from settlements of this scale. The plant has a designed capacity of 900 m³/day, with an actual discharge volume of 100.34 m³/day, indicating operational headroom. The treated effluent from COV Tremosna Zaluzi is discharged into the local water system, which ultimately drains into the Berounka River basin and then into the Vltava River, a major tributary of the Elbe River. This river network flows through the Czech Republic and into the North Sea, supporting diverse aquatic life and providing water for downstream communities.

The plant discharges into the Berounka River basin, which flows into the Vltava River and then the Elbe River, eventually reaching the North Sea. This watershed supports a variety of fish species and provides habitat for aquatic birds. The region's moderate climate and mixed land use (agricultural and urban) influence the nutrient load in the receiving waters, making effective treatment important for maintaining water quality.