Eggelsberg Wastewater Treatment Plant, Ibm, Oberösterreich | Advanced Treatment

Eggelsberg wastewater treatment plant is located in Ibm, a locality within the municipality of Eggelsberg in Oberösterreich, Austria. The plant serves a population of 5,832 and operates with advanced treatment technology, ensuring high-quality effluent. Its designed capacity of 9,522 m³/day indicates it can handle significant hydraulic loads, with current discharge volume at 737.89 m³/day. As an Austrian plant, Eggelsberg operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for agglomerations discharging into sensitive areas. Austria has designated many water bodies as sensitive, necessitating nutrient removal. The plant's advanced treatment level aligns with these requirements, providing phosphorus and nitrogen removal to protect receiving waters. The plant's effluent discharges into local watercourses that drain into the Inn River, a major tributary of the Danube. The Danube ultimately flows into the Black Sea, making this plant part of a vast international basin. The surrounding region includes the Ibmer Moor wetland area, an ecologically sensitive zone that supports diverse aquatic life and migratory birds. The plant's advanced treatment helps preserve this fragile ecosystem.

The plant discharges into local streams that feed the Inn River, which joins the Danube near Passau. The Danube then flows through Central and Eastern Europe to the Black Sea. The nearby Ibmer Moor is a raised bog ecosystem of high ecological value, supporting rare plant species and serving as a habitat for waterfowl. Advanced treatment at Eggelsberg reduces nutrient loading, protecting downstream water quality in the Inn-Danube system.