Abstract: Water control apparatus for evaporative cooling system includes a medium which is saturated with water from a water supply and water draining from the medium is directed to a pan or trough in which there is a float system and which includes orifices through which water flowing into the pan flows out of the pan. The float system includes a microswitch which controls a solenoid connected to the water supply system either directly or indirectly through a time delay relay. The relay may be variable so that the delay time may be adjusted in accordance with appropriate parameters.