COV Velky Meder Wastewater Treatment Plant, Veľký Meder, Slovakia

COV Velky Meder is a municipal wastewater treatment plant located in Veľký Meder, a town in the Trnavský kraj region of southwestern Slovakia. The plant serves a population of approximately 5,985 residents, placing it in the small agglomeration category under EU classification. As a Slovak facility, COV Velky Meder operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The directive also mandates appropriate treatment before discharge into freshwater bodies, ensuring compliance with national and European water quality standards. The plant discharges treated effluent into the local hydrological network, which ultimately drains into the Danube River basin via the Váh River or smaller tributaries. The Danube is a major European waterway that flows into the Black Sea, supporting diverse aquatic ecosystems and serving as a critical resource for communities downstream.

The plant's receiving waters are part of the Danube River basin, one of Europe's most significant hydrological systems. Treated effluent flows through local streams and canals into the Váh River, a major Danube tributary, before reaching the Danube and eventually the Black Sea. This watershed supports diverse aquatic life, including fish species and migratory birds, and is ecologically sensitive due to its role in regional biodiversity and water supply.