Dish machine or sinks not set up or working properly, or missing sanitizer test kit and gauges.
Handwash sink missing, blocked, or used for other purposes, or missing soap, towels, or the handwash sign.
Plumbing not installed or maintained properly — leaks, mop sink issues, unserviced water filters, or missing backflow prevention.
Surfaces that touch food — cutting boards, ice bins, dish racks — soiled or not sanitized.