COV Olesnice Wastewater Treatment Plant, Křtěnov, Jihomoravský kraj

COV Olesnice is a municipal wastewater treatment plant located in Křtěnov, a village in the Blansko District of Jihomoravský kraj, Czech Republic. The plant serves a population of approximately 5,388 people, classifying it as a small to medium agglomeration under Czech national regulations. 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 size in freshwater areas. Its designed capacity is 5,630 m³/day, with a reported discharge volume of 322.08 m³/day, indicating operational headroom. The treated effluent is discharged into a local watercourse that ultimately drains into the Svratka River basin, part of the Danube River system flowing to the Black Sea. The plant plays a key role in protecting local water quality in the Jihomoravský region.

The plant discharges into a small stream that feeds into the Svratka River, a major tributary of the Dyje River, which joins the Morava River and eventually the Danube. This watershed supports diverse aquatic life and is important for regional biodiversity. The receiving waters are ecologically sensitive, requiring effective nutrient removal to prevent eutrophication in downstream reservoirs and the Danube Delta.