central station construction groundwater Pump Stuttgart 21 Transport tunnels underground water filter

Stuttgart 21 VI: Pump System at Groundwater Management Department

Stuttgart 21 is one of the biggest construction projects in Germany. It includes the underground construction of a new central station for the city of Stuttgart as well as the creation of a new network of tracks and tunnels that allows high speed trains to pass in the area, possibly reduces travelling times and connects Stuttgart to international transport networks. It is conducted by Deutsche Bahn and co-financed by public money.
However, despite enthusiasm from its founders and the industry, the project has been heavily criticised. Not only has it become much more expensive than expected, but there are also doubts about the efficiency and safety of the new central station as well as about the actual benefit of the high speed tracks. Moreover, the construction fuelled protests and many discussions on protected buildings and nature reserves within the city such as historic parks.
When it comes to underground construction work groundwater is a difficult issue. This recording was made at the groundwater management department of Stuttgart 21. Here the groundwater from all construction sites of the project is filtered before it is distributed over the city to seep back into the ground. The water is transported in many kilometres of pipes. This requires a powerful pump system. In this recording the loud whirring of the pumps can be heard from very close by.

Sound: Kathinka Engels
Photo: Konrad Gutkowski


49.9 MB
1 min 26 s
2 (Stereo)
Sample rate:
Bit rate:
Bit depth:
96 kHz
4608 kb/s
32 bit

Recorded on March 12, 2018
Stuttgart Hauptbahnhof
Stuttgart, GERMANY
Creative Commons License