Global trade is responsible for transporting an estimated 500 billion tonnes of “virtual water” each year, according to a new World Bank report, underscoring the deep connection between international commerce and global water sustainability. Virtual water refers to the hidden freshwater used in producing goods such as food, textiles, and industrial products—resources that are not visible in the final item but are essential to its creation.
The report highlights how everyday consumption carries a significant water footprint. For instance, producing a single cup of coffee can require about 150 litres of water, with additional ingredients like sugar, milk, and baked goods increasing the total substantially. In effect, a typical breakfast could consume more water than some households use in an entire day, bringing the issue closer to home for consumers worldwide.
According to the World Bank, virtual water flows now account for roughly a quarter of global water use and are about 50 times the weight of goods transported annually by sea. Over the past two decades, this form of trade has expanded by nearly 50 percent, driven by rising incomes, changing dietary patterns, and increasingly complex global supply chains that connect producers and consumers across continents.
While global trade can improve water efficiency by shifting production to regions with more abundant resources, the benefits are not evenly distributed. The report notes that around one-fifth of irrigation water embedded in traded goods comes from water-stressed regions, effectively exporting scarce water and exposing these economies to long-term risks. At the same time, water-dependent sectors such as agriculture, energy, and industry continue to support about 1.7 billion jobs globally.
The World Bank emphasizes that policy decisions will play a critical role in shaping sustainable outcomes. Trade rules, tariffs, and environmental standards can either promote or hinder water efficiency, while private companies are increasingly adopting water-saving targets across supply chains. The institution calls for gradual reforms, including better tracking of water footprints and investment in efficient technologies, warning that managing virtual water flows will be essential to safeguarding economic growth, jobs, and global water security in the years ahead.
source: punch