High-risk food (like meat) thawed improperly, promoting bacterial growth.
Food-contact or nonfood-contact surfaces improperly designed, constructed, maintained, or located.
Plumbing not installed or maintained properly — leaks, mop sink issues, unserviced water filters, or missing backflow prevention.
Floors, walls, ceilings, or attached equipment dirty, damaged, or poorly vented.
Fire suppression or extinguishing equipment issue (referred to the fire authority).