COV Sala Veca Wastewater Treatment Plant, Šaľa, Nitriansky kraj

COV Sala Veca is a municipal wastewater treatment plant located in Šaľa, a town in the Nitriansky kraj region of western Slovakia. The plant serves a population of approximately 9,107 people, placing it in the small to medium agglomeration category under EU classification. As a plant of this scale in Slovakia, COV Sala Veca is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations between 2,000 and 10,000 population equivalent discharging into freshwater. The regulatory framework ensures appropriate treatment standards are met. The treated effluent from COV Sala Veca likely discharges into a local watercourse within the Váh River basin, which flows into the Danube River and ultimately the Black Sea. The plant plays a key role in protecting the water quality of the Váh River and downstream ecosystems, supporting aquatic life and preventing eutrophication in the Danube Delta.

The plant discharges into the Váh River basin, a major tributary of the Danube River. The Danube flows into the Black Sea, making this plant part of a large international watershed. The Váh River supports diverse aquatic life and is an important ecological corridor in the Carpathian region. Protecting water quality here helps maintain the ecological balance of the Danube Delta, a sensitive downstream environment.