COV Sahy Wastewater Treatment Plant, Šahy, Nitriansky kraj, Slovakia

COV Sahy is a municipal wastewater treatment plant located in Šahy, a town in the Nitriansky kraj region of Slovakia. The plant serves a population of approximately 4,619 and is designed to handle a capacity of 12,300 m³ per day, with an average discharge volume of 945.30 m³ per day. The plant employs advanced treatment processes, which go beyond the secondary treatment standards required by the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size (under 10,000 population equivalent), the directive mandates appropriate treatment, and advanced treatment ensures high-quality effluent suitable for sensitive environments. The treated effluent is discharged into local water bodies that ultimately drain into the Danube River basin, contributing to the Black Sea watershed. The plant plays a key role in protecting downstream aquatic ecosystems and maintaining water quality in the region.

COV Sahy discharges into local streams that flow into the Ipeľ River, a tributary of the Danube. The Danube River basin is a major European waterway supporting diverse aquatic life and providing water for millions. The advanced treatment at this plant helps reduce nutrient loads and pollutants, protecting the ecological health of the downstream river system and the Black Sea.