"Those data centers, they're just evaporating water into the air. They're different from normal, residential users. When we get the water from the utility, and then we discharge the water back to the sewage immediately, we are just withdrawing water—we're not consuming water. A data center takes the water from this utility, and they evaporate the water into the sky, into the atmosphere, where it may not return to the earth’s surface until a year later."
Shaolei Ren
https://www.wired.com/story/ai-energy-demands-water-impact-internet-hyper-consumption-era/