What are three kinds of hazards associated with potable water cross connection?

Three kinds of hazards associated with potable water cross connections include biological hazards, chemical hazards, and physical hazards. Biological hazards can arise from the introduction of pathogens, such as bacteria or viruses, into the drinking water supply. Chemical hazards may occur when harmful substances, such as pesticides or heavy metals, contaminate the potable water. Physical hazards can involve debris or particulate matter that compromises water quality, leading to potential health risks for consumers.