Science that matters

During the COVID-19 pandemic, the world came to a standstill – and many lakes became measurably clearer. A global study shows that lockdowns caused water turbidity in lakes worldwide to drop sharply, particularly in lakeshore regions and river mouths, as a result of reduced industry, traffic and leisure activities. 

The sanitation objective of Sustainable Development Goal 6, sanitation for all, is off-track and far from being completed by 2030. Vermifiltration could help address this gap: The nature-based sanitation management system shows increasing promise globally because of its low cost. Researchers at Eawag’s Sandec department visited vermifilter installations in India and Switzerland to examine how local differences influence their optimal design.

Since 1992, the United Nations has designated 22 March as World Water Day. In 2026, the theme will be "Water and Gender". What does water have to do with gender equality? And why does access to water determine education, dignity and power? We discuss this with Jessica MacArthur, knowledge broker in Eawag's Research Department for Sanitation and Water for Development (Sandec).

Using isotope markers to break down food webs and track changes in them, as well as tracing the pathways and accumulation of pollutants in aquatic organisms – the Otto Jaag Water Protection Prize was awarded in 2025 for two exciting and highly topical doctoral theses.