Liquid quality control device

A liquid quality management device capable of being added to a liquid supply system, the liquid supply system supplying a liquid within a storage container to a dispensing device through a supply pipe with the liquid pressurized in order to cool the liquid in the dispensing device, and dispensing the cooled liquid to a drinking container from the dispensing device, the liquid quality management device comprising:

• an actual flow rate preparation unit including a flow rate sensor which detects the amount of liquid dispensed into the drinking container, and configured to determine an actual measured flow rate of the liquid dispensed into the drinking container from the dispensing device;
• a dispensing liquid temperature sensor configured to measure a temperature of the liquid dispensed into the drinking container;
• and
• a determination unit electrically connected to the actual flow rate preparation unit and the dispensing liquid temperature sensor, the determination unit configured to determine an integrated flow rate of the liquid dispensed into the drinking container in a period in which the measured liquid temperature is equal to or higher than a set temperature, and to determine whether or not coolability of the dispensing device is suitable by comparing the integrated flow rate with a determination value.