COV Svaty Jur Wastewater Treatment Plant, Svätý Jur, Slovakia

COV Svaty Jur is a municipal wastewater treatment plant located in Svätý Jur, a town in the Bratislavský kraj region of Slovakia. The plant serves a population of 3,747 and operates with a designed capacity of 8,000 m³ per day, currently discharging approximately 767 m³ per day of treated effluent. The plant provides secondary treatment, which is the standard required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations with a population equivalent between 2,000 and 10,000. This level of treatment typically involves biological processes to reduce organic matter and suspended solids, ensuring compliance with EU effluent quality standards. The treated wastewater is discharged into local watercourses that eventually drain into the Danube River basin, which flows into the Black Sea. The plant plays a key role in protecting the local aquatic environment from nutrient pollution and organic loading, supporting the ecological health of downstream rivers and wetlands.

The plant discharges into the local watershed, which is part of the Danube River basin. The Danube flows through Central and Eastern Europe before reaching the Black Sea. This region supports diverse aquatic life, including fish species such as carp and pike, and provides important migratory corridors for birds. The secondary treatment helps reduce nutrient loads that could otherwise contribute to eutrophication in downstream water bodies.