Today the water tanks are used for more than just drinking purposes, and hence it becomes very essential to establish the water tanks as per the need. Especially in countries like Australia the water tanks are enormously useful in many fields. Sydney water tank are in soaring demand because of the reason that people are wiling to save their gardens be it fruit or flower from getting vanished due to the lack of water. People are becoming conscious about saving the water as well and hence for this purpose also a lot of Sydney water tank are established. The establishment of water tanks is the primary rebate program for the government of Australia and the Sydney water tank and Melbourne water tank all qualifies the water rebate program of the government. Water tanks fulfill the lack of water for the people suffering from the water crises. The Melbourne water tank is a great example of the success of the establishment of water tanks.