Based on the Ministerial Decision number 203 for year 2006 to formulate a technical committee evaluating the electrical performance and harmonics levels in Mubarak pumping station, a staff of qualified engineers and technicians from the Mechanical and Electrical Research Institute (MERI), National Water Research Center is shared with this technical committee. The MERI staff used advanced measuring instruments belong to the institute to record the operational tests on the station. This report introduces the results and analysis of one of these tests that is carried out on Saturday 30 March 2008 to operate 16 pumping units.