COV Banovce nad Ondavou Wastewater Treatment Plant, Trhovište, Slovakia

COV Banovce nad Ondavou is a wastewater treatment plant located in Trhovište, within the Košický kraj of eastern Slovakia. The plant provided secondary treatment for the local community before its closure. As a secondary treatment facility, the plant met the minimum requirements set by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of its scale. The directive mandates secondary treatment for all discharges from agglomerations above 2,000 population equivalent, ensuring organic matter reduction. The area drains into the Ondava River, a tributary of the Bodrog River, which flows into the Tisza River and ultimately the Danube River basin. The local watershed supports diverse aquatic life and is part of the larger Carpathian region's ecological network.

The plant is situated inland in the Ondava River basin, which flows into the Bodrog River, then the Tisza River, and finally the Danube River before reaching the Black Sea. The watershed supports diverse aquatic habitats and migratory fish species. The region's water quality is influenced by agricultural runoff and municipal discharges, making proper treatment essential for downstream ecosystems.