Quantify the global burden of waterborne disease, assess the scale of infrastructure investment deficit, and document emerging contaminant classes — PFAS, pharmaceuticals, microplastics — that conventional treatment cannot address.

WHO/UNICEF JMP (Joint Monitoring Programme) data on water and sanitation access across 195 countries (2024). Cross-referenced with Lancet Countdown water security metrics, USGS geological survey on groundwater depletion, and peer-reviewed literature on PFAS contamination in drinking water supplies. Cost estimates from OECD infrastructure tracking and World Bank water security assessments.

5 billion lack safely managed sanitation. Waterborne diseases — diarrhea, cholera, typhoid — kill 829,000 people annually, mostly children under 5 in Sub-Saharan Africa and South Asia. The global water infrastructure investment deficit is $270B annually through 2030.

Beyond traditional pathogens, PFAS contamination now affects drinking water supplies in 40% of major US cities and is spreading in Europe; 10% of EU population likely exposed. Microplastics found in 98% of global drinking water samples tested.

Climate change is concentrating this crisis: 4 billion people face severe water scarcity at least one month per year; by 2050, under current trajectories, this will exceed 6 billion.