6.4 Mio. m³ of water is what Microsoft used in 2022.
By the way, this is 34 percent more than the year before, likely due to the AI boom. Microsoft still aims to be a water positive company by 2030.
Source: https://www.datacenterdynamics.com/en/news/microsofts-water-consumption-jumps-34-percent-amid-ai-boom/