COV Zohor Wastewater Treatment Plant, Zohor, Slovakia

COV Zohor is a municipal wastewater treatment plant located in Zohor, a village in the Malacky District of Bratislavský kraj, western Slovakia. The facility serves a population equivalent of 2,779, classifying it as a small agglomeration under EU standards. It operates with advanced treatment technology, ensuring high-quality effluent before discharge. As an advanced treatment plant, COV Zohor goes beyond secondary treatment to remove nutrients such as nitrogen and phosphorus, which is typical for facilities in sensitive areas under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant has a designed capacity of 3,500 cubic meters per day, with a reported discharge volume of 568.73 units, indicating operational headroom. The treated wastewater is discharged into local streams that flow into the Morava River, a major tributary of the Danube. The Morava River forms part of the border between Slovakia and Austria and supports diverse aquatic ecosystems. The plant's advanced treatment helps protect downstream water quality in this internationally significant river system.

The plant discharges into small watercourses that drain into the Morava River, which flows into the Danube near Bratislava. The Morava River floodplain is an ecologically sensitive area, supporting diverse bird populations and riparian habitats. Advanced treatment at COV Zohor reduces nutrient loading, helping to prevent eutrophication in the Danube and ultimately the Black Sea.