The pie charts demonstrate how water usage in Sydney was divided up by four different industries and civilian use, in 1997 and 2007.

As can be seen from the graphs, food industry accounted for the largest percentage of water consumption in both years, consumed a staggering 48% in 1997 and 41% in 2007. On the contrary, building industry was responsible for the least percentage of water usage in the same period, constituted merely 5% in 1997 and a negligible 2% in 2007.

What is more, service industry, household use and manufacturing industry all fell in between, registered 13%, 19% and 15% of total water usage in 1997, respectively, and 25%, 21% and 11% in 2007, accordingly.

Therefore, it can be concluded that in both 1997 and 2007, food industry and building industry were the largest and least water user in the largest city of Australia. While the percentage of water usage for service industry and civilian use were on the rise from 1997 to 2007, total percentage of water usage in manufacturing industry took a dip.