COV Dubnica nad Vahom Wastewater Treatment Plant, Dubnica nad Vahom, Slovakia

COV Dubnica nad Vahom is a municipal wastewater treatment plant located in Dubnica nad Vahom, a town in the Trenciansky kraj region of western Slovakia. The plant serves a population of approximately 16,586 people, placing it in the medium agglomeration category under EU classification. As a Slovak facility, the plant operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. The plant's treatment processes are designed to meet these regulatory standards, ensuring compliance with national and EU water quality requirements. The treated effluent from COV Dubnica nad Vahom is discharged into the Vah River, the longest river in Slovakia. The Vah flows southwest through the Danube Basin, eventually joining the Danube River near Komarno. The Danube then flows into the Black Sea. The Vah River supports diverse aquatic life and is an important water resource for the region, making proper wastewater treatment essential for protecting downstream ecosystems.

The plant discharges into the Vah River, which flows through western Slovakia and joins the Danube River, ultimately reaching the Black Sea. The Vah River basin supports diverse aquatic habitats and is used for recreation, fishing, and water supply. Effective treatment at this plant helps protect water quality in the Vah and downstream Danube ecosystem, which is ecologically sensitive due to its role as a major European waterway and migratory corridor for fish and birds.