COV Ostratice Wastewater Treatment Plant, Veľké Hoste, Slovakia

COV Ostratice was a wastewater treatment plant located in Veľké Hoste, a village in the Bánovce nad Bebravou district of the Trenčiansky kraj region in western Slovakia. The plant provided secondary treatment, a standard level for municipal wastewater in Slovakia under EU regulations. As a secondary treatment facility, COV Ostratice would have used biological processes to reduce organic matter and suspended solids. Although the plant is now closed, it operated within the framework of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this scale. The plant's closure may reflect consolidation of wastewater services in the region. The treated effluent from COV Ostratice would have discharged into local waterways, likely tributaries of the Bebrava River, which flows into the Nitra River and ultimately the Danube River basin. The Danube carries water to the Black Sea, making the plant part of a vast international watershed. The surrounding area is agricultural and rural, with small watercourses supporting local ecosystems.

The plant's receiving waters are part of the Bebrava River catchment, a tributary of the Nitra River, which joins the Váh River and then the Danube. The Danube flows into the Black Sea, connecting this site to a major European basin. The local watershed supports agricultural runoff and small streams that provide habitat for fish and invertebrates. Even closed plants can have legacy impacts, but the natural recovery of the water body is expected over time.