It is evident from the given pie charts that it depicts the comparision of water usage between San Diego, California and Rest of the world. It is crystal clear that most of the water usage is being done for residential purpose in San Diego and California whereas in rest of the world it is completely opposite.
Turning to first pie chart, More than half percentage of water is being used for Residential purpose and 23 and 17 percent of water usage is done for industry and agricultural purpose.
If we talk about Water usage in California, to some extent the same percentage of water is being used for residential and industry purpose. It accounts 39 and 33 percent respectively. In California the water used for agriculture is more than that of San Diego.
The water usage in rest of the world is completely different from the usage of water in San Diego and California. In rest of the world more than half percent of water used for agriculture. Equal quantity of water is used by Industries in San Diego and rest of the world. The water usage in rest of the world by residential area is very low. It only accounts 8 percent.
From this we conclude that in rest of the world more water is used for farming purposes whereas in San Diego and California more water is used in household purposes.