COV Plavecky Stvrtok Wastewater Treatment Plant, Plavecký Štvrtok, Slovakia

COV Plavecky Stvrtok is a municipal wastewater treatment plant located in Plavecký Štvrtok, a village in the Bratislavský kraj region of western Slovakia. The plant serves a population of approximately 604 residents, classifying it as a small agglomeration under EU guidelines. It operates secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive for communities of this size. The plant has a designed capacity of 2,500 cubic meters per day and currently treats an average daily volume of 123.61 cubic meters, indicating significant spare capacity. As a secondary treatment facility, it uses biological processes to reduce organic matter and suspended solids before discharge. The plant is part of Slovakia's national wastewater infrastructure, regulated under the country's implementation of EU directives. The treated effluent is discharged into local streams that flow into the Morava River, a major tributary of the Danube. The Morava River supports diverse aquatic life and is an important ecological corridor in the region. The plant's operations help protect downstream water quality in the Danube basin, which ultimately drains into the Black Sea.

The plant discharges into small watercourses that feed the Morava River, a significant tributary of the Danube. The Morava River basin supports diverse aquatic habitats and is an important migratory route for fish species. Downstream, the Danube River flows through multiple countries before reaching the Black Sea, making local treatment crucial for regional water quality. The area is characterized by lowland agricultural landscapes and scattered wetlands.