The validation of the EWave system has been performed in two different ways. Main focus was the installation as pilot application directly on site at the RWW facility in the waterworks Dorsten-Holsterhausen. Before the installation and usage various IT security requirements had to be fulfilled and the control center operators were introduced to the goals and the potential of the EWave project. Then the EWave system was initially run in parallel to the real operation, without applying the setpoints on the real plant. Finally in the last stage of this test proposed setpoints were applied to the plant control. In parallel to this pilot test a further validation has been performed with the focus to quantify the benefit of EWave. To be able to assess the EWave benefit as closely as possible a concept has been developed that compared simulation results of a real historic plant operation with a theoretical EWave optimized plant operation. Finally, the results of the whole EWave project and the two validation approaches are evaluated and summarized and the potential of the approach is assessed in an outlook.