Water withdrawals for irrigation account for 66% of the total withdrawals (and up to 90% in arid regions). The other 34% is used by do,estimates households, industries and is evaporated from reservoirs. Increasing population and changes in lifestyle, the water to produce food for human consumption and insutrial proccesses is becoming scarce.
In 2015, over 91% of the world's population used an improved drinking water source, which exceeds Millenial Development Goal of 88%. 2.6 billion people gained access to an improved drinking water source and of those 2.6 billion, 1.9 billion people gained access to a piped supply. Despite this accomplishment, there are still 663 million people who do not have access to an improved drinking water source, mostly people who are poor and live in rural areas. There are also many questions about the safety of these improved supplies regarding if they are free of contaminants and will serve as a reliable supply throughout the year.