COV Ziar nad Hronom Wastewater Treatment Plant, Žiar nad Hronom, Slovakia

COV Ziar nad Hronom is a municipal wastewater treatment plant located in Žiar nad Hronom, in the Banskobystrický kraj region of central Slovakia. The plant serves a population of approximately 11,381, classifying it as a medium-sized agglomeration under EU standards. The plant operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size. The directive ensures that the plant meets effluent standards to protect the environment. The treated wastewater is discharged into the Hron River, a tributary of the Danube, which flows into the Black Sea. The plant plays a key role in protecting the local watershed and downstream ecosystems, including the Danube Delta, a region of high ecological importance.

The plant discharges into the Hron River, which flows into the Danube River and ultimately reaches the Black Sea. The Hron River supports diverse aquatic life and is an important corridor for migratory fish. The plant's operation helps maintain water quality in this transboundary river system, reducing nutrient and pollutant loads that could impact downstream ecosystems.