Water, sanitation and hygiene have important impacts on both health and disease.
Water-related diseases include:
those due to micro-organisms and chemicals in water people drink;
diseases like schistosomiasis which have part of their lifecycle in water;
diseases like malaria with water-related vectors;
drowning and some injuries;
and others such as legionellosis carried by aerosols containing certain micro-organisms.
Inadequate drinking-water, sanitation and hygiene are estimated to cause 842,000 diarrhoeal disease deaths per year (WHO 2014), and contribute substantially to the other diseases listed below.
WORLD HEALTH ORGANIZATION Information sheets on Water-related diseases
*All information on this page is from the World Health Organization website: http://www.who.int/water_sanitation_health/diseases/en/