Is the AI water panic real?

Claims about the water consumption of artificial intelligence have spread quickly, often reduced to striking figures about the cost of a single chatbot query. The underlying numbers are more complicated, and more locally specific, than the headlines suggest.

Data centre water use depends heavily on cooling design and climate. Facilities using evaporative cooling consume significant volumes; those using closed-loop or air cooling consume far less but draw more electricity.

The meaningful question is therefore not how much water AI uses globally, but how much a specific facility draws from a specific catchment, and whether that catchment is under stress.

That framing matters for New Zealand as data centre investment increases here. Consent conditions, cooling technology and location determine whether a project is a marginal user or a genuine pressure on local supply.