The time it takes to freeze tap water varies. Several factors, such as the quantity of tap water, initial temperature of the tap water and temperature of the environment where the water is allowed to freeze, influence the length of time it takes to transform the liquid into its solid state.
Under the first condition, if two glasses containing varying quantities of tap water are left to freeze, the water inside the glass with the lesser amount freezes faster compared to the other glass. Based on the second factor, if two containers carrying tap water of differing temperatures are put inside a freezer, the water inside the glass with the lower temperature turns into ice faster than the water in the other glass. When two glasses start with the same amount and temperature, the water inside the glass placed in a colder environment freezes faster.