Abstract: An apparatus for optimizing water purification profile, has a front processing unit, a booster pump having a water inlet, a rear processing unit, a waterflow control unit, an emission control unit, a control circuit, and a temperature sensing probe. The front processing unit is connected to the water inlet via a pipe. The control circuit corresponds to the emission control unit. The temperature sensing probe senses water temperature. The control circuit is connected to the temperature sensing probe whereby automatically adjusting time of producing purified water in a periodic cycle. The apparatus implements a constant water utilization rate as water temperature changes.