Global Deaths from Contaminated Water
Contaminated water contributes to hundreds of thousands of deaths each year, primarily from diarrheal diseases. The World Health Organization estimates that unsafe water, sanitation, and hygiene cause around 485,000 diarrheal deaths annually, with children under five disproportionately affected.
Main Causes of Water-Related Deaths
Waterborne pathogens, chemical pollutants, and inadequate sanitation drive most fatalities. Common diseases include cholera, typhoid, and dysentery. In low-income regions, limited treatment infrastructure and poor hygiene practices increase exposure risks.
Who Is Most Affected
Children, elderly people, and those with weakened immune systems face the highest risk. Rural and impoverished communities often rely on untreated sources, compounding exposure. Improving water treatment, sanitation, and access to clean sources can significantly reduce deaths.
For detailed data and regional breakdowns, see the World Health Organization fact sheet on drinking water.
