Many people don't have access to clean water - but how many?

Try our quiz to test your knowledge of the uses - and diminishing supplies - of water around the world.

Question 1

The average Sub-Saharan African uses the same amount of water in a day as someone in a developed country uses when they do what?

A: Brush their teeth for two minutes with the tap running B: Run a lawn sprinkler for a minute C: Flush a toilet D: Any of the above

Question 2

The number of people dying from waterborne disease is equal to how many large passenger jets crashing every day?

A: 8 B: 24 C: 46 D: 69

Question 3

Most of the Earth is made up of sea. But exactly what proportion of our planet�s water is not salty?

A: 0.5 % B: 15% C: 4.2% D: 2.5%

Question 4

It takes between 0.4 and three cubic metres of water to produce a kilogramme of cereals. How much does a kilo of grain-fed beef need?

A: 3 B: 5 C: 10 D: 15

Question 5

How many people in the world do not have access to clean drinking water?

A: 1 in 3 B: 1 in 6 C: 1 in 10 D: 1 in 20

Question 6

What proportion of the world�s major rivers are seriously polluted or depleted?

A: 10% B: 25% C: 50% D: 75%

Question 7

Which of these countries uses most water per person per year?

A: Russia B: India C: Egypt D: Germany

Question 8

The World Commission on Water estimates that it would cost an extra $100bn a year to tackle global water scarcity. What is this roughly equivalent to?

A: The amount spent on ocean cruises, make-up and ice-cream yearly B: The net worth of Microsoft chief Bill Gates C: The estimated value of the worldwide bottled water industry D: A quarter of the US budget deficit

 Press the button and see how you have done