The Altes Pumpwerk or Old pumping station is located in Bremen in Germany.

The disused sewage pumping station is now used as a museum showing the history of water treatment.

Historically the people of Bremen would tip their waste from their toilet windows into the river and this caused disease.

[1] The building was in use from 1913 to 1994 pumping sewage into the River Weser.

The museum was started by a group of volunteers including former employees in 1997.