a water purification system for purifying water flowing through a water flow path . the system includes a water purification device having an inlet and an outlet in the water flow path and at least one interior volume communicating with the inlet and outlet . a purification medium is disposed within the interior volume of the water purification device . a flow control system is provided controlling a volume of purified water dispensed from the outlet . the flow control system includes an input device configured to allow a user to input a desired volume of purified water to be dispensed from the outlet and a sensing device coupled with the electronic input device and operative to determine the volume of purified water being dispensed from the outlet . a flow regulation device is coupled with the flow control system and operative to stop the discharge of purified water at the outlet upon reaching the desired volume of purified water .