Water sanitation hygiene

Diseases

African woman collecting water
WHO/TDR /Andy Craggs

WASH can prevent a wide range of diseases which may include:

  • those due to ingestion of water contaminated by micro-organisms and chemicals such as diarrhoea, arsenicosis or fluorosis;
  • diseases like schistosomiasis which have part of their lifecycle in water;
  • diseases like soil-transmitted helminthiasis resulting from poor sanitation and hygiene;
  • diseases like malaria or dengue with water-related vectors;
  • and others such as legionellosis carried by aerosols containing certain micro-organisms.

Further information

See also