Until 2019, the water from the penguin tank, which was replaced every time its turbidity increased, was discharged into the surface water.In 2020 Weltvogelpark, in agreement with the authorities, decided to install a water reuse system, so that the water discarded from the penguin tank was used for irrigation.
Weltvogelpark already had a tank for irrigation that was suplied by both surface water and rainwater. In 2021 the tank was modified so that it could be supplied by the waste water from the Penguin tank. This required the installation of taps, pipes, pumps and filtration systems. The system was gradually brought into operation in March 2021 allowing the park to reduce its dependence on surface water, and the amount of water discharged.