Quantify the global scale of unsafe water and sanitation, assess the infrastructure investment deficit, and evaluate the epidemiological and economic costs of persistent water insecurity.

WHO/UNICEF Joint Monitoring Programme data (2024) across 195 countries. World Bank WASH infrastructure assessment. Lancet Countdown water security metrics. Epidemiological analysis of waterborne disease burden (WHO GBD 2024).

5 billion lack safely managed sanitation. 4 million deaths annually — more than malaria and tuberculosis combined. Lead contamination alone exposes 800 million children to developmental harm. The water infrastructure investment gap is $114 billion annually.

In the US, aging water infrastructure causes 23,000 main breaks daily; the average pipe age in major cities exceeds 50 years (many built in the 1920s). Climate change is compounding the crisis: droughts are lowering water tables while extreme precipitation is overwhelming treatment systems.

The economic cost of water insecurity is estimated at $260 billion annually in lost productivity.