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.
Scoops and other in-use utensils stored improperly (e.g. handle down in the food).
Plumbing not installed or maintained properly — leaks, mop sink issues, unserviced water filters, or missing backflow prevention.