1.1 billion people around the world lack access to water. Here's why:

There are millions of people all over the world who don’t have access to water, or, if they have access, that water is unable to be used. Just 1 percent of our freshwater is easily accessible, with much of it trapped in glaciers and snowfields.According to WWF, some 1.1 billion people worldwide lack access to water, and a total of 2.7 billion find water scarce for at least one month of the year.

Causes

Overuse and Wastage of Water: It may be overused on people,industries, animals, land, or any other number of things.

Pollution of Water: Pollution can be anything from oil, carcasses, industrial chemicals, radioactive leaks and fecal matter. No matter what it is; it causes issues for the people who may need to use it. Failing sewage systems are a cause of disease and malnutrition for the population.

Commercialisation of water bodies: The handover of freshwater bodies to Commercial giants has reduced the access of the masses to fresh clean water. Water companies prefer the contamination of lakes and rivers, and through discreetly signed MOU’s with governments gain full access to natural resources.

Conflict: If there is conflict over an area of land, it may be difficult to access the water that is located there. i.e. Kashmir, Palestine etc.

Distance: Areas that are considered to be desert, or areas that are secluded, may not have somewhere that the people can get water effectively.

Drought: A drought is, in short, an area which is not receiving enough rainfall to be able to sustain the life that is residing there.

Governmental Access: In some countries, specifically those with dictatorships, the use of water may be strictly controlled by those in power, causing a scarcity for those who may be located in those areas of the world.