Dish machine or sinks not set up or working properly, or missing sanitizer test kit and gauges.
Surfaces that touch food — cutting boards, ice bins, dish racks — soiled or not sanitized.
Plumbing not installed or maintained properly — leaks, mop sink issues, unserviced water filters, or missing backflow prevention.
Mops, brooms, and other cleaning and maintenance equipment stored or maintained improperly.