A new report from the World Bank has brought renewed attention to the vast, often overlooked role of water in global commerce, revealing how international trade is deeply intertwined with water sustainability.
At the centre of the findings is the concept of “virtual water” — the massive volumes of freshwater consumed during the production of goods but not visible in the final products themselves. From agricultural commodities to textiles and industrial goods, this hidden resource is embedded in nearly everything traded across borders.
The scale is striking. Each year, global trade is estimated to move around 500 billion tonnes of virtual water. To put this into perspective, that represents roughly a quarter of total global water use and far exceeds the physical weight of goods transported worldwide. Over the past 20 years, this flow has surged by about 50 per cent, driven by rising incomes, shifting consumption patterns and increasingly complex global supply chains.
Everyday consumption offers a relatable glimpse into this phenomenon. A single cup of coffee, for instance, can require approximately 150 litres of water to produce. When combined with other breakfast staples such as sugar, milk and baked goods, the total water footprint of a typical morning meal can surpass the daily water usage of many households.
Despite its scale, virtual water trade can deliver important efficiency gains. By enabling water-intensive goods to be produced in regions with more abundant or efficiently managed water resources, global trade can reduce overall water consumption. The report highlights that crop trade alone saves an estimated 500 billion cubic metres of water annually, as agricultural production is often concentrated in more water-efficient locations.
This efficiency is critical given the economic stakes. Water-dependent sectors — including agriculture, energy and industry — support around 1.7 billion jobs worldwide, making sustainable water use not just an environmental issue but a cornerstone of global economic stability.
However, the benefits are not evenly distributed. A significant portion of virtual water exports — about one-fifth of irrigation water embedded in traded goods — originates from regions already facing water stress. In such cases, countries are effectively exporting scarce water resources, often with lower efficiency, which can heighten long-term economic and environmental risks.
Trade policy plays a decisive role in shaping these outcomes. Tariffs, subsidies and regulatory frameworks influence where water-intensive production takes place, affecting industries such as agriculture, textiles, leather, chemicals, and paper. At the same time, barriers to importing water-saving technologies — including drip irrigation systems, smart meters and wastewater treatment solutions — can slow progress toward more efficient resource use.
Governments are increasingly turning to non-tariff measures to address these challenges. Policies such as water-efficiency labelling schemes and sustainability regulations are being used to guide both producers and consumers toward more responsible practices. These frameworks are beginning to reshape supply chains by embedding water considerations into production and trade decisions.
The private sector is also stepping up. Multinational companies are setting targets to reduce water consumption in manufacturing and are collaborating with suppliers to improve efficiency across global networks. Such initiatives are becoming a key component of corporate sustainability strategies.
Looking ahead, trade agreements could serve as powerful tools for promoting better water management. By incorporating environmental commitments and fostering cooperation on resource efficiency, these agreements have the potential to align economic growth with sustainability goals.
Still, the report cautions that reform must be gradual. Abrupt policy shifts could disrupt markets, particularly in developing economies where industries and livelihoods are closely tied to water-intensive production. Instead, a phased approach — including improved transparency around water footprints, stronger supply-chain traceability and increased investment in efficient technologies — is recommended.
As global demand for resources continues to rise, managing virtual water flows will become increasingly important. The challenge for policymakers, businesses and international institutions will be to balance trade-driven growth with the need to safeguard water resources — a task that will be critical to ensuring long-term economic resilience and global water security.