Haus Wastewater Treatment Plant, Weißenbach, Styria, Austria

Haus wastewater treatment plant is located in Weißenbach, a locality in the municipality of Haus im Ennstal, Styria, Austria. The plant serves a population equivalent of 5,842 and operates with advanced treatment, ensuring high-quality effluent. Its designed capacity is 5,400 m³/day, with an average daily discharge of 639.10 m³/day. As an Austrian plant, Haus operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates advanced treatment for sensitive areas. Austria has designated many water bodies as sensitive, requiring nutrient removal. The plant's advanced treatment level aligns with these requirements, protecting local water quality. The treated effluent is discharged into the Enns River, which flows through the Ennstal valley and eventually joins the Danube River. The Danube then drains into the Black Sea. The Enns River supports diverse aquatic life and is an important corridor for fish migration, including species like grayling and brown trout.

The plant discharges into the Enns River, a tributary of the Danube, which ultimately flows into the Black Sea. The Enns River in this region is ecologically sensitive, supporting diverse aquatic life and serving as a migratory corridor for fish. Advanced treatment helps protect the river's water quality and downstream ecosystems.