Overview
COV Hradek nad Nisou is a wastewater treatment plant serving Stráž pod Ralskem in the Liberec Region of the Czech Republic. It treats wastewater from a population of approximately 5,581.
COV Hradek nad Nisou is a wastewater treatment plant located in Stráž pod Ralskem, within the Liberec Region (Liberecký kraj) of the Czech Republic. The plant serves a population of about 5,581, placing it in the small agglomeration category under Czech and EU regulations. As a plant serving fewer than 10,000 people, it is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment based on the sensitivity of the receiving waters. The plant must comply with national standards that align with EU requirements, typically involving secondary treatment for inland freshwater discharges. The plant discharges treated effluent into local watercourses that eventually drain into the Ploučnice River, a tributary of the Elbe (Labe) River. The Elbe flows through Germany and into the North Sea, making this plant part of a transboundary river basin. The surrounding region is characterized by forests and agricultural land, with the nearby Ještěd-Kozákov Ridge providing a scenic backdrop.
Environmental context
The treated effluent from COV Hradek nad Nisou enters local streams that flow into the Ploučnice River, a tributary of the Elbe River. The Elbe ultimately discharges into the North Sea, making this plant part of a large international drainage basin. The region supports diverse aquatic life, including fish species such as brown trout and grayling, and the water quality is important for downstream ecosystems and human use.
Frequently asked questions
COV Hradek nad Nisou is located in Stráž pod Ralskem, in the Liberec Region (Liberecký kraj) of the Czech Republic. The plant serves the local municipality and surrounding areas.
The plant serves a population of approximately 5,581 people, classifying it as a small agglomeration under EU wastewater treatment directives.
The plant discharges treated effluent into local watercourses that flow into the Ploučnice River, a tributary of the Elbe River. The Elbe ultimately reaches the North Sea.
As a Czech plant serving fewer than 10,000 people, COV Hradek nad Nisou operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates appropriate treatment based on the sensitivity of receiving waters. National Czech regulations implement these standards.
For small agglomerations like this, the EU directive requires secondary treatment (biological treatment) unless the receiving waters are less sensitive. Inland plants typically provide at least secondary treatment to meet effluent quality standards.
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