Gemeinde Dellach_Gemeinde Berg Wastewater Treatment Plant, Dellach im Drautal, Kärnten

Gemeinde Dellach_Gemeinde Berg is a wastewater treatment plant located in Dellach im Drautal, a municipality in the state of Kärnten, Austria. The plant serves a population of around 3,843 and is designed to handle a capacity of 7,800 m³ per day, with an actual discharge volume of 429 m³/day. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), Austria requires advanced treatment for sensitive areas, and plants of this scale are expected to meet stringent effluent standards to protect receiving waters. The treated effluent is discharged into the Drau River, which flows through the Drava Valley and eventually joins the Danube River, ultimately reaching the Black Sea. The plant plays a key role in maintaining water quality in the Drau catchment, supporting aquatic life and downstream ecosystems.

The plant discharges into the Drau River, a major tributary of the Danube. The Drau flows through the Alpine region and supports diverse aquatic habitats, including fish species such as grayling and brown trout. Downstream, the river contributes to the Danube basin, which is ecologically significant for migratory fish and wetland ecosystems. The advanced treatment helps protect these waters from nutrient pollution.