COV Koksov Baksa Wastewater Treatment Plant, Košice, Slovakia

COV Koksov Baksa is a municipal wastewater treatment plant located in the Krásna district of Košice, Slovakia. It serves a population of approximately 206,714 people, making it a large agglomeration under EU classification. The plant is situated in the Košický kraj region of eastern Slovakia. As a large agglomeration, the plant is expected to comply with the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment as a minimum, and tertiary treatment if the receiving waters are sensitive. Regulatory standards ensure appropriate treatment for the population served. The plant discharges treated wastewater into the local watershed, which ultimately drains into the Hornád River and then the Tisza River basin, a major tributary of the Danube. The downstream environment supports diverse aquatic life and is part of the larger Danube River ecosystem, which is ecologically significant for Central Europe.

The treated effluent from COV Koksov Baksa flows into the Hornád River, a tributary of the Tisza River, which eventually joins the Danube River before reaching the Black Sea. The local watershed supports diverse aquatic habitats and is important for migratory fish species. The region's water quality is influenced by both urban runoff and agricultural activities, making effective wastewater treatment crucial for maintaining ecological balance.