Quantify the global water access and sanitation crisis, map the geographic and socioeconomic disparities, assess the infrastructure and financing gaps preventing universal access, and evaluate the health and economic costs of water insecurity.

WHO/UNICEF Joint Monitoring Programme (JMP) data across 195 countries, supplemented with World Bank water infrastructure assessments and disease burden analysis from GBD Study 2023. Cross-referenced with recent satellite data on groundwater depletion and surface water contamination from USGS and ESA. Cost-effectiveness analysis of water infrastructure investment from World Bank Infrastructure Finance.

6 billion lack access to safely managed sanitation. Sub-Saharan Africa and South Asia account for 70% of those without access. Water-related diseases (diarrhea, typhoid, cholera, schistosomiasis) cause 829,000 preventable deaths annually.

The infrastructure investment gap is $114 billion per year through 2030 — not because the technology is unavailable, but because cost recovery mechanisms break down in low-income markets where those most in need have the least ability to pay.

Groundwater depletion is accelerating: the Indus, Ganges, and North China plains are being drained faster than natural recharge, threatening water security for 2 billion people.