Today, water supply networks are available in almost residential area and water supply network management is an inevitable question. In particular, this network is managed in the villages and districts in an uncontrolled manner due to the initiative of the people. For this reason, energy consumption, water consumption and loss of human power are considerable. In the water supply networks basically there are water reservoirs at high points and in the low points water is being pumped with pump station. In automation-free systems, the engine in the pump station is flooded with water. If there is no communication between the tank and the pumping station, the tank is run with uncontrolled timed pump. For this reason, water consumption, pump power consumption and loss of man power that enables the system to operate and control and the decrease of the engine mechanical life are the most important losses. In order to eliminate these problems, automation works of water supply networks are being developed more and more day by day. In this study, the water supply network of Kızılcahamam district of Ankara was converted into a computer controlled automation system. There are 7 water tanks and 8 pumping stations for drinking water in the district. With the completion of the work, the flood of water tanks or the storage of the tanks is prevented. In addition, the number of employees providing pump failures, electricity consumption and system control has been reduced to a minimum. The applied system has been actively used from 2011 to today.