The provided pie charts delineate the total amount of world water and four major types of water, while the accompanying bar chart depicts the usage of water for three different purposes in Egypt, Saudi Arabia and Canada.
It is apparent from the pie chart that saline water and frozen water constitute the largest share whereas fresh water and fresh renewable water account for the smallest proportion. 97.5% of total world water is made up of saline water and remaining is represented by fresh water. Looking at total fresh water in world, frozen water makes up 69.8% of total fresh water and conversely only 0.3% is registered by fresh renewable water. Moreover, fresh groundwater and underground ice water recorded for 29.9% and 0.9% respectively.
Observing the bar chart, it reveals that agriculture remains the dominant purpose in Egypt and Saudi Arabia, on the other hand industry utilises more water in Canada. In Egypt, 80% of water is used for agriculture and only around 8% for industry, while, domestic water is used moderately for domestic purpose. In contrast, Canada well roughly 45% for industry and 18% for domestic, 30% for agriculture. Meanwhile, Saudi Arabia registers the highest usage of water among other nations for agriculture accounting for 50% and approximately 8% for domestic use.
Overall, it is evident from the given graphs that more than three quarters of total world water is comprised of saline water, and water is most used for either agriculture or industry in three major nations.