COV Kolarovo Wastewater Treatment Plant, Kolárovo, Slovakia

COV Kolarovo is a municipal wastewater treatment plant located in Kolárovo, a town in the Nitriansky kraj region of southwestern Slovakia. The plant provides secondary treatment for wastewater from the local population, contributing to the region's sanitation infrastructure. As a secondary treatment facility, COV Kolarovo meets the minimum requirements 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 treated effluent from COV Kolarovo is discharged into local waterways that ultimately drain into the Danube River basin. The Danube is a major European river that flows into the Black Sea, supporting diverse aquatic ecosystems and providing water for millions of people. The plant's operation helps protect downstream water quality in this internationally significant river system.

COV Kolarovo discharges into the Váh River, a tributary of the Danube River. The Danube flows through multiple countries before reaching the Black Sea, supporting a rich diversity of fish and bird species. The plant's secondary treatment helps reduce organic pollution and nutrient loads, protecting the ecological health of the Danube basin.