What must be avoided with hoses connected to water sources?

Submerging hoses in stagnant water poses a significant risk due to the potential for backflow contamination. When hoses are submerged, particularly in stagnant water, there is a chance that harmful bacteria, chemicals, or other contaminants can be drawn back into the water supply through the hose if there is a change in pressure or back siphoning occurs. This can lead to cross-contamination, ultimately posing health risks to consumers when the water is used in food preparation or cleaning.

Maintaining the integrity of water sources by preventing contamination is crucial in food safety. Proper management of hoses, including ensuring they remain above the water line during use, can help mitigate these risks effectively.