Mechanical dishwasher not operated as per manufacturer's specifications (time/temperature/chemical concentration); machine defective.

Plumbing not properly installed or maintained; anti-siphonage or backflow prevention device not provided where required; equipment or floor not properly drained; sewage disposal system in disrepair or not functioning properly.

Food contact surface not properly washed, rinsed and sanitized after each use and following any activity when contamination may have occurred.