Handwash sink missing, blocked, or used for other purposes, or missing soap, towels, or the handwash sign.
Dish machine or sinks not set up or working properly, or missing sanitizer test kit and gauges.
Water not safe, or hot (100°F) and cold water not available under pressure.
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.