Overview
Wagna Leibnitz wastewater treatment plant serves Obervogau, Austria, with a population equivalent of 34,823. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
The Wagna Leibnitz wastewater treatment plant is located in Obervogau, in the district of Leibnitz, Steiermark, Austria. It serves a population equivalent of 34,823, classifying it as a medium-sized agglomeration under EU regulations. The plant is situated near the Mur River, a major tributary of the Drava, which flows into the Danube. As an Austrian facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations between 10,000 and 100,000 population equivalent, the directive requires secondary treatment (biological treatment) as a minimum. In sensitive areas, such as those draining into nutrient-sensitive water bodies, tertiary treatment may be required to reduce nitrogen and phosphorus loads. The plant's treated effluent is discharged into the Mur River, which flows southeast through Slovenia and Croatia before joining the Drava. The Drava then meets the Danube near Osijek, Croatia. The Mur-Drava-Danube corridor is an ecologically significant region, supporting diverse aquatic life and serving as a migratory route for fish species. Proper treatment helps protect water quality in this transboundary river system.
Environmental context
The Wagna Leibnitz plant discharges into the Mur River, a major tributary of the Drava, which ultimately flows into the Danube. This river system supports diverse aquatic ecosystems and is an important migratory corridor for fish. The plant's location in the Mur valley, an agriculturally productive area, means that nutrient removal is critical to prevent eutrophication downstream. The Drava and Danube are part of the Danube River Basin, one of Europe's most ecologically significant watersheds.
Frequently asked questions
The Wagna Leibnitz wastewater treatment plant is located in Obervogau, in the district of Leibnitz, Steiermark, Austria. It is situated near the Mur River, close to the town of Wagna.
The plant serves a population equivalent of 34,823, which classifies it as a medium-sized agglomeration under the EU Urban Waste Water Treatment Directive.
The treated effluent from the Wagna Leibnitz plant is discharged into the Mur River. The Mur flows southeast through Slovenia and Croatia before joining the Drava, which then meets the Danube.
As an Austrian facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size (10,000-100,000 PE), the directive requires at least secondary treatment. In sensitive areas, tertiary treatment may be required to reduce nutrients.
In Austria, plants serving approximately 35,000 people typically provide secondary biological treatment, often with nutrient removal to meet EU standards. Many plants also incorporate tertiary treatment to protect sensitive water bodies like the Mur-Drava-Danube system.
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