Every year, between 5 and 10 million people around the world die because of poor-quality water, drainage and sewage removal. The World Health Organisation estimates that almost 80% of diseases result from polluted water supplies and unhygienic sanitation.
Water-related diseases like cholera, typhoid and diarrhoea are spread when people come into contact with water that has been contaminated with viruses, bacteria and parasites. Other diseases, such as malaria and yellow fever, are spread by insects that live near contaminated water.
All of these diseases spread quickly through communities, causing sickness and death. Even when people survive the illness, they often lose earnings from work or miss out on educational opportunities.