What is the tap water tank capacity of the AquaTru Connect and Classic models October 11, 2023 20:41 Follow Both the AquaTru Connect and Classic models can hold 1 gallon of tap water in their tanks. Related articles What are the sizes of the AquaTru Connect and Classic models? What is the difference between AquaTru Classic and AquaTru Connect? Can I get a bigger water tank for my AquaTru or AquaTru Connect countertop purifier? How quickly does AquaTru Classic or AquaTru Connect countertop purify water? Does AquaTru Connect use different filters?