- A new UN University study of 138 countries finds that water insecurity, poverty and gender inequality overlap in 61% of developing nations, affecting an estimated 2 billion people — with 30% trapped in all three.
A major new report from the United Nations University Institute for Water, Environment and Health (UNU-INWEH) has found that 61% of developing countries face overlapping water insecurity, poverty and gender inequality. Published in May 2026, Water Quality: A Mirror and Magnifier of Structural Inequalities and Social Injustice draws on data from 138 countries to develop a novel Water Quality Vulnerability Index (WQVI), integrating the Drinking Water Safety Index (DWSI), the International Wealth Index (IWI) and the Gender Inequality Index (GII).
The study finds that 54% of countries fall below basic drinking water safety thresholds. A multiple regression model combining wealth and gender indicators explains 73.4% of the variation in water quality across countries — a finding the authors say challenges the assumption that infrastructure investment alone can resolve the crisis.
The report argues that water insecurity and gender inequality are mutually reinforcing
The triple trap and what it looks like regionally
The report identifies a "lose-lose-lose" cluster: 41 countries, roughly 30% of those studied, simultaneously face poor water safety, low wealth and wide gender gaps, among them Chad, South Sudan, Guinea-Bissau and Papua New Guinea. Only 54 countries (39%) fall into a "win-win-win" category.
Regionally, developing countries in Europe record the lowest vulnerability, while Africa is the most exposed, with an average DWSI of 17.7 against Europe's 57.1. Yet significant divergence exists within income groups: Mauritius, Jordan, Morocco, Sri Lanka and Vietnam achieve comparatively safe water outcomes despite modest national incomes, pointing to governance quality and equitable resource allocation as factors that wealth alone cannot guarantee.
Water quality reflects who is protected by systems, and who is left to cope on their own
Gender, governance and the limits of infrastructure
The report argues that water insecurity and gender inequality are mutually reinforcing. Women and girls disproportionately carry the burden of water collection, bearing time costs, health risks and exclusion from decision-making that constrain their economic and educational opportunities — and, in turn, a country's capacity to improve water safety. Drawing on frameworks of intersectionality, feminist political ecology and environmental justice, the authors contend that infrastructure investment cannot deliver lasting improvements without structural reforms that address who holds power and who bears risk.
Lead author Professor Grace Oluwasanya, Senior Researcher on Water, Climate and Gender at UNU-INWEH, states: "Unsafe water is often treated as a technical failure. But our findings show it is also a social failure. Water quality reflects who is protected by systems, and who is left to cope on their own." Professor Kaveh Madani, Director of UNU-INWEH and co-author, adds: "This report is a wake-up call that exposes the profound injustice in our global water systems. Water quality acts as both a mirror and a magnifier of inequalities. If we are serious about achieving the Sustainable Development Goals, addressing this triple threat of unsafe water, poverty, and gender exclusion is not just an ethical imperative, but a strategic necessity."
Recommendations and the SDG countdown
With progress on SDG 6 widely acknowledged to be off-track ahead of 2030, the report calls for targeted international financing for the most vulnerable countries, regional water security alliances, gender equality embedded in water governance, and a Global Water Resilience Fund to support community-driven projects prioritising women's participation.
The authors also urge governments to incorporate the WQVI into national development planning. Given that SDG 6 progress is directly linked to SDG 5 on gender equality and SDG 1 on poverty reduction, the report warns that siloed, infrastructure-only approaches risk perpetuating the cycles they seek to break.
