COV Luky Wastewater Treatment Plant, Lúky, Trenčiansky kraj, Slovakia

COV Luky is a municipal wastewater treatment plant located in the village of Lúky, within the Púchov district of Trenčiansky kraj in western Slovakia. The plant serves a small population of around 1,110 residents, reflecting its role in a rural community. It operates under the regulatory framework of the Slovak Republic, which implements the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this scale. The plant provides secondary treatment, which is the minimum standard required under the EU directive for freshwater discharges from agglomerations of this size. With a designed capacity of 1,875 m³/day and a reported discharge volume of 227.17 m³/day, the facility operates well below its capacity, indicating potential for future growth or seasonal variability. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The treated effluent is discharged into a local watercourse that ultimately drains into the Váh River basin, part of the Danube River system flowing into the Black Sea. The plant plays a key role in protecting local streams and the downstream aquatic environment from untreated wastewater, supporting water quality in the region's sensitive karst and agricultural landscapes.

The plant discharges into a small tributary of the Váh River, which flows into the Danube and eventually the Black Sea. The Váh basin supports diverse aquatic life and is an important ecological corridor in the Carpathian region. The surrounding area includes agricultural land and forested hills, making the protection of water quality critical for both local ecosystems and downstream communities.