Image of Pader springs -- PADERBORN, GERMANY MARCH 22: istallation showing the amount of water per second from the pader springs , World water day, March 22, 2010 in Paderborn, GermanyImage of Pader springs -- PADERBORN, GERMANY MARCH 22: istallation showing the amount of water per second from the pader springs , World water day, March 22, 2010 in Paderborn, Germany