Wateraid’s Water Works campaign aims to highlight the importance of basic necessities in tackling poverty.
The charity said preventable diseases caused by dirty water and poor sanitation were the biggest killers of children in Africa.
Mr Crockart said: “An additional two billion people have accessed clean water within the last 20 years. It shows that aid is working and that we are making progress towards eradicating illnesses, poverty and even death, which can be caused by a lack of clean water.
“But, there is still a lot of work to be done, 783 million people don’t have safe water to drink, and around 2.5 billionn are lacking adequate sanitation.”