Managing limited water supply through smart sitting and technology choices refers to the fact that limited water supply is a common challenge across CDR approaches that can only be partially addressed through strategic siting decisions and appropriate DAC technology choices. Strategic siting implies siting DAC technologies with the potential to produce water (e.g., 2C) in more arid areas while refraining to do so for technologies with high water consumption (e.g., 1a, 1C, and 1D). Better siting decisions can be enabled by building out geographical inventories and water risk assessments.