COV Trencin pravobrezna Wastewater Treatment Plant, Kostolná-Záriečie, Slovakia

COV Trencin pravobrezna is a wastewater treatment plant located in Kostolná-Záriečie, within the Trenčiansky kraj region of western Slovakia. The facility serves a population of approximately 12,866 people, classifying it as a medium agglomeration under EU regulations. Its location near the Váh River places it within an important inland waterway system. As a Slovak plant, COV Trencin pravobrezna 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 more stringent treatment if the receiving waters are designated as sensitive areas. The plant's treatment processes and capacity details are not publicly available, but the regulatory framework ensures compliance with European standards for effluent quality. The treated wastewater from the plant is discharged into the local water environment, ultimately reaching the Váh River, a major tributary of the Danube. The Danube flows into the Black Sea, making this plant part of a large international river basin. The Váh River supports diverse aquatic life and is an important ecological corridor in the region.

The plant discharges into the Váh River basin, which flows into the Danube River and eventually the Black Sea. This waterway supports diverse aquatic species and serves as a critical migratory route for fish. The region's inland location and moderate climate influence the river's flow and ecological health, requiring careful management of nutrient loads to prevent eutrophication downstream.