COV Rychnov u Jablonce nad Nisou - Secondary Wastewater Treatment Plant in Dolní Dobrá Voda, Czech Republic

COV Rychnov u Jablonce nad Nisou is a municipal wastewater treatment plant located in Dolní Dobrá Voda, part of the Rychnov u Jablonce nad Nisou area in the Liberecký kraj region of the Czech Republic. The plant serves a population of 510 and provides secondary treatment, which is the standard biological treatment stage required under Czech and EU regulations for smaller agglomerations. The plant has a designed capacity of 1,886 m³/day and currently treats an average daily volume of 714.78 m³, indicating it operates well below its maximum capacity. As a facility in an EU member state, it falls under the Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations of this size. The plant is operated as part of the municipal infrastructure managed by local authorities. The treated effluent is discharged into nearby streams that drain into the Jizera River basin, ultimately flowing into the North Sea via the Elbe River. The plant plays a key role in protecting local water quality in the Jizera Mountains foothills, a region known for its natural landscapes and recreational areas. Its secondary treatment process helps reduce organic pollutants and nutrients, supporting the ecological health of downstream water bodies.

The plant discharges into small watercourses that feed into the Jizera River, a tributary of the Elbe River, which flows through Germany to the North Sea. The surrounding Liberecký kraj region features forested hills and agricultural land, with the Jizera Mountains nearby. The treatment plant helps maintain water quality in this ecologically sensitive area, supporting aquatic life and downstream ecosystems.