COV Obrnice Ceske Zlatniky - Secondary Wastewater Treatment Plant in Obrnice, Czech Republic

COV Obrnice Ceske Zlatniky is a municipal wastewater treatment facility located in Obrnice, a town in the Ústecký kraj region of the Czech Republic. The plant serves a small population of 98 people and operates with secondary treatment, which is appropriate for its scale under Czech and EU regulations. The plant has a designed capacity of 300 cubic meters per day, with a current discharge volume of 28.45 cubic meters per day, indicating ample reserve capacity. As a small agglomeration, it falls under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for inland discharges from populations over 2,000; however, smaller plants like this one are still expected to meet national standards for environmental protection. The treated effluent is discharged into local water bodies that eventually drain into the Bílina River, a tributary of the Elbe River, which flows into the North Sea. The plant plays a key role in protecting the local watershed from untreated sewage, supporting water quality in the region's streams and rivers.

The plant discharges into the Bílina River basin, which flows through the Ústecký kraj region before joining the Elbe River. The Elbe ultimately drains into the North Sea, making this plant part of a transboundary river system. The local watershed supports diverse aquatic life and is used for recreation and agriculture, so effective treatment is essential to prevent nutrient pollution and maintain ecological health.