COV Dolny Kubin Wastewater Treatment Plant, Veličná, Slovakia

COV Dolny Kubin is a municipal wastewater treatment plant located in Veličná, within the Dolný Kubín district of Žilinský kraj, Slovakia. The plant serves a population equivalent of 18,416, classifying it as a medium-sized agglomeration under EU regulations. Its location in the Orava region places it within a mountainous, rural-urban landscape typical of northern Slovakia. As a plant serving between 10,000 and 100,000 people, COV Dolny Kubin is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment as a minimum. For discharges into sensitive areas, more stringent tertiary treatment may be mandated. The regulatory framework ensures compliance with national and EU standards. The treated effluent from COV Dolny Kubin is discharged into the Orava River, a tributary of the Váh River, which flows into the Danube River and ultimately the Black Sea. The Orava River supports diverse aquatic life and is part of a region known for its natural landscapes and ecological importance.

The plant discharges into the Orava River, which flows into the Váh River, a major tributary of the Danube River. The Danube carries the water to the Black Sea. The Orava River basin supports diverse aquatic ecosystems, including fish species like the Danube salmon, and is an important corridor for migratory birds. The region's mountainous terrain and forested catchments contribute to water quality sensitivity, requiring effective nutrient removal to prevent eutrophication downstream.