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Is the cold water on the water heater of the university teaching building drinkable?
Can't drink.

The water heater in the university teaching building, if it is an old-fashioned water heater that produces cold water, may be concentrated wastewater that cannot be drunk. However, if it is a new type of cold and hot water dispenser, it can be drunk, but the water dispenser in the teaching building, as a public equipment, must be hygienic before drinking.

Please ensure the sanitation of the water source when drinking water.