Infographic

Water Words Matter

Data-center water discussions often mix together withdrawal, consumption, and return flow. They are not the same thing.

What This Graphic Shows

Water withdrawn for a data center is not necessarily the same as water consumed by the facility.

Withdrawal measures water removed from a groundwater or surface-water source for use. Consumption refers to the portion of that water that is no longer immediately available for reuse – for example, because it evaporates during cooling. Return flow is water released after use or treatment that becomes available for reuse in groundwater or surface water.

This distinction matters when evaluating data-center water claims. A facility may withdraw substantially more water than it consumes if a significant portion is subsequently returned. Conversely, evaporative cooling can consume water by transferring it to the atmosphere.

Water-use figures should therefore identify what is actually being measured – withdrawal, consumption, or return flow. Those numbers answer different questions and should not be treated as interchangeable.

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