Flagship Initiative against extreme heat and related environmental health risks in workplaces and major events
Environment, Climate Change, One Health and Migration
We work to prevent disease and promote health by addressing key areas of environmental health including climate change, clean energy; air quality; water, sanitation and hygiene (WASH); and chemicals and radiation. Health threats are addressed through a One Health approach....
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5 October 2026
WHO global water, sanitation and hygiene: Annual report 2025
Safe water, sanitation and hygiene (WASH) remained fundamental to health, disease prevention, resilience and equity in 2025, but the global context for...
17 June 2026
Guidelines for drinking-water quality: fourth edition incorporating the first, second and third addenda
The fourth edition incorporating the first, second, and third addenda of the World Health Organization’s (WHO) Guidelines for drinking-water quality...
18 March 2026
WHO international scheme to evaluate household water treatment technologies: results of Rounds III and...
This report presents the performance results of 21 household water treatment (HWT) products evaluated in Rounds III and IV of the WHO International Scheme...
The WHO/UNICEF Joint Monitoring Programme (JMP) produces internationally comparable estimates of progress on drinking water, sanitation and hygiene (WASH)...
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