In rural areas of Bangladesh, 97% of the population relies on tube wells. The past three decades in Bangladesh, millions of tube wells have been installed to reduce the diarrheal disease; especially in children. On average a tube well can last around 15 to 20 years with the care of beneficiary. Without access to a tube well people have to drink pond or lake water that are contaminated with bacteria and used for showering or other purpose.
In 15 minutes while you have your lunch £250 could provide clean water for 1 family. Off monsoon season a tube well could take up to 3-6 month to get the best source of water.