It is important that the water used to produce ice is drinkable, that is, clear, odorless, transparent and free from chemical and bacteriological contaminations. The water drinkability control must be made by accredited laboratories in order to ensure its quality. Remember that temperature is the only difference between drinkable water and ice. Federal laws set forth that the same standards for drinkable water must be used to produce ice, consequently fully controlled through analyses, Good Manufacturing Practices, Standardized Operating Procedures, and fully monitored water quality.