A system for dispensing water comprises a water processing system comprising an input connected to receive water from a water supply system and an output configured to dispense a metered amount of processed water, the water processing system defining a closed path between the input and the output, a control system operatively coupled to the water processing system for controlling the dispensing of processed water from the output, and, a user interface operatively coupled to the control system for permitting a user to cause the output to dispense a desired amount of processed water. The user interface comprises control means for starting and stopping a flow of processed water from the output and logging means for debiting the amount of process water dispensed from the output from a user account.