A freezing desalination method includes cooling salt water in a first chamber with a conductive interface having a thermoelectric cooler (TEC). The conductive interface separates the first chamber from the second chamber containing fresh water. The method further includes reversing a current supplied to the conductive interface by a power source, when ice forms on the conductive interface, thereby allowing the ice to detach from the conductive interface. The ice formed in the first chamber is moved to the second chamber with a moving mechanism thereby melting the ice in the second chamber.