River water

River water from the Danube

As in the previous decades, a further rise in the demand for water was also expected around 1965. New options for the provision of drinking water had to be explored. As tight limits had been set on the further extraction of ground and spring water in the eastern area of the state of Baden-Württemberg, the decision was made to extract river water from the Danube and treat it to produce high-quality drinking water. Less than one percent of the water flow of the Danube is used here. In 1973, Langenau waterworks became operational on “Spitziger Berg” mountain on the edge of the Donauried. As the site of the untreated water pumping station is at Leipheim in Bavaria, a state treaty for the extraction of Danube water was formed between Baden-Württemberg and Bavaria. In a multi-stage process, the river water extracted at Leipheim is treated to produce drinking water at Langenau waterworks.

Facts and figures

Danube water

45,3Million cubic metres extraction volume
1.100Litres per second average continuous extraction
45Percent proportion of total delivery from the Landeswasserversorgung

Stage treatment process

1Percent of the total water flow of the Danube extraction volume for drinking water production

Annual figures 2021

Researched and tested –
The process for drinking
water extraction from
the Danube has been
optimised over many years
of trials.