To prevent backflow, what is required for ice containers?

To prevent backflow in ice containers, maintaining an air gap is essential. An air gap is a space between the ice container and the water source that helps to prevent contaminants from a potentially contaminated source, such as a sink, from flowing back into the clean ice. This is crucial for maintaining food safety, as backflow can introduce pathogens and other harmful substances into ice that may be used in food and beverages.

Good drainage is also important as it allows excess water to properly flow away, minimizing the risks of standing water which can harbor bacteria and other contaminants. However, the specific requirement for preventing backflow and ensuring that the ice remains uncontaminated hinges on the creation of that air gap, making it the correct answer in this context. Sealed containers and air-tight closures can help keep debris out but do not specifically address the issue of preventing backflow from sources of contamination.