The pie charts illustrate the distribution of water usage across different sectors in Sydney, Australia, for the years 1997 and 2007.

In 1997, the food industry was the largest consumer of water, accounting for 48% of the total usage. This was followed by the manufacturing sector, which used 15% of the water. Household use and the service industry consumed 19% and 13% of the water, respectively. The building industry had the smallest share, using only 5% of the total water.

By 2007, there were noticeable changes in the water usage patterns. The food industry remained the largest consumer, although its share decreased to 41%. The manufacturing sector's water usage also declined to 11%. In contrast, household use increased to 25%, making it the second-largest consumer. The service industry saw a slight increase in its share, rising to 21%. The building industry's water usage decreased further to 2%.

Overall, the data indicates a shift in water consumption patterns over the decade, with a significant increase in household water use and a decrease in the water usage by the food and manufacturing industries. The service industry also saw a moderate increase, while the building industry's water consumption continued to decline.