COV Nesvady Wastewater Treatment Plant, Nesvady, Slovakia

COV Nesvady is a municipal wastewater treatment plant located in Nesvady, a town in the Komárno District of the Nitriansky kraj region in western Slovakia. The plant serves a population of about 1,089 and has a designed capacity of 1,000 cubic meters per day, with a current discharge volume of 222.87 cubic meters per day. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Secondary treatment typically involves biological oxidation and sedimentation to remove organic matter and suspended solids, ensuring compliance with EU effluent quality standards. The treated effluent is discharged into local watercourses that drain into the Danube River basin, ultimately reaching the Black Sea. The plant plays a key role in protecting the region's water quality, particularly in the context of the Danube River Basin District, which is a major European watershed supporting diverse aquatic ecosystems and human uses.

The plant's discharge enters the local drainage network, which flows into the Danube River via the Váh or Nitra rivers. The Danube River basin is ecologically significant, supporting diverse fish populations, migratory birds, and riparian habitats. The plant's secondary treatment helps reduce nutrient and organic pollution, contributing to the health of downstream water bodies and the Black Sea ecosystem.