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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The WHO/UNICEF Joint Monitoring Programme (JMP) produces internationally comparable estimates of progress on drinking water, sanitation and hygiene (WASH)...
4 November 2026
Global benefits and costs of prioritized actions on climate change and health: technical report
This technical report presents a global assessment of the health, environmental and economic benefits and costs of scaling up six prioritized climate–health...
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...
30 July 2026
Key ingested per- and poly-fluoroalkyl substances (PFAS) and their health effects: landscape review
The World Health Organization (WHO) commissioned a landscape review to systematically collect and assess available data sources on PFAS occurrence and...
News
All →Drinking-water quality: a roadmap
WASH annual report
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...
WASH Strategy
20 February 2026
WHO water, sanitation, hygiene and waste strategy 2026-2035
Unsafe water, sanitation and hygiene (WASH) still drive at least 1.4 million preventable deaths each year, while climate shocks, outbreaks, migration...
WASH reflections series
Safo Kalandarov
A lake in Tadjikistan
A lake in Tadjikistan
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