Water Softener System

A water softening system comprising:

• a first filter unit and a second filter unit configured to selectively perform any one of a removal mode of discharging soft water that contains a smaller amount of an ionic material than source water or a recycling mode of discharging reclaimed water that contains a larger amount of the ionic material than the source water;
• a first discharge passage and a second discharge passage configured to discharge the soft water or the reclaimed water from the first filter unit and the second filter unit, respectively;
• a first drainage passage and a second drainage passage connected to the first discharge passage and the second discharge passage, respectively, and configured to drain the reclaimed water to an outside;
• a first drainage valve and a second drainage valve disposed in the first drainage passage and the second drainage passage, respectively, and configured to open and close the first drainage passage and the second drainage passage, respectively;
• and
• a controller configured to control the first drainage valve or the second drainage valve to be repeatedly opened and closed during a recycling time period.