There are several ways to remove salt from tap water at home, including distillation, reverse osmosis, ion exchange, and freezing. Distillation involves boiling the water and collecting the steam in a separate container, while reverse osmosis involves forcing the water through a semi-permeable membrane. Ion exchange uses a resin that exchanges salt ions for hydrogen ions, while freezing involves removing the ice to leave behind the salt. It's important to note that these methods may not completely remove all of the salt from the water and some may remove beneficial minerals.