What is a requirement for ice machines and dishwashers in relation to water supply?

Ice machines and dishwashers require atmospheric vacuum breakers as a critical safety feature related to their water supply. An atmospheric vacuum breaker is designed to prevent backflow, which is the undesirable reversal of water flow that could potentially introduce contaminants into the clean water supply. This is especially important in food service environments, where maintaining food safety and water quality is paramount. The presence of an atmospheric vacuum breaker ensures that any fluctuations in water pressure do not create a situation where contaminated water could be siphoned back into the potable water supply, thereby safeguarding public health and adhering to health and safety regulations.

While other options may relate to equipment or plumbing, they do not specifically address the essential need for backflow prevention in relation to ice machines and dishwashers. This makes atmospheric vacuum breakers a fundamental requirement in ensuring safe operation and compliance with food safety standards.