The United Nations declared it back in January: the world has plunged into global water bankruptcy . Rivers run dry. Aquifers empty beyond recovery. Droughts now claim $307 billion a year worldwide. Yet financial markets shrug. No panic in bond yields. No spike in commodity futures. Investors treat water risks like yesterday’s weather report. Kaveh Madani, director of the UN University Institute for Water, Environment and Health, put it bluntly. “In finance, when you spend more than you earn for too long, you go bankrupt. We have done exactly that with our water ‘checking’ and ‘savings’ accounts.” His report, Global Water Bankruptcy: Living Beyond Our Hydrological Means in the Post-Crisis Era , warns of irreversible damage. Rain and rivers? That’s income. Groundwater, wetlands, glaciers? Savings, now drained. Four billion people face severe scarcity at least one month yearly. Half the world’s food comes from regions where water storage shrinks. Three billion live there.…