COV Zlatna na Ostrove: Closed Wastewater Treatment Plant in Zlatná na Ostrove, Slovakia

COV Zlatna na Ostrove is a former wastewater treatment plant located in Zlatná na Ostrove, a village in the Komárno district of Nitriansky kraj, western Slovakia. The plant provided secondary treatment to the local community before its closure. As a secondary treatment facility, the plant would have met the minimum treatment standards required under 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, with more stringent requirements for sensitive areas. The region drains into the Danube River basin via local tributaries. The Danube ultimately flows into the Black Sea, making this plant part of a vast transboundary watershed that supports diverse aquatic ecosystems and provides water for millions of people.

The plant is situated in the Danube River basin, one of Europe's most significant watersheds. The Danube flows through multiple countries before reaching the Black Sea, supporting rich biodiversity including migratory fish species and wetland habitats. Even though the plant is closed, its historical operations would have affected local water quality in the surrounding drainage network.