Agriculture uses 70% of global freshwater but wastes 50–60% through over-irrigation. AquaCrop Intelligence combines $12 soil moisture sensors, satellite ET mapping, and AI crop-stress modelling into an open-source decision system telling farmers exactly when and how much to irrigate — running on a $30 Android device or USSD feature phone.

A cooperative water pricing model (shared aquifer zone budgets) creates economic incentives to conserve. Evidence from pilots in India, Morocco, and California shows 35–50% water reduction with equal or better yields. 2M farmers reached in 3 years through existing extension networks at $15/farmer/year.