COV NCHZ Novaky Wastewater Treatment Plant, Zemianske Kostoľany, Slovakia

COV NCHZ Novaky is a wastewater treatment plant located in Zemianske Kostoľany, within the Trenčiansky kraj region of Slovakia. The plant serves the local population and industrial facilities, with a designed capacity of 44,600 cubic meters per day, indicating it handles a significant volume of wastewater for the area. The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this scale. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids, ensuring the effluent meets quality standards before discharge. The treated effluent is discharged into local water bodies that eventually drain into the Danube River basin, which flows into the Black Sea. The plant plays a key role in protecting the water quality of the region's rivers and downstream ecosystems, supporting aquatic life and human uses.

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, supporting diverse aquatic habitats and providing water for agriculture, industry, and communities. The region's rivers are ecologically sensitive, hosting species such as sturgeon and other migratory fish. Effective wastewater treatment is crucial to prevent nutrient pollution and maintain water quality in this transboundary basin.