Microsoft CEO Satya Nadella stated that the company's newest AI data centers use as little water annually as a single restaurant, crediting closed-loop cooling systems for the dramatic reduction from the millions of gallons consumed by older facilities. The claim comes as AI infrastructure faces intensifying environmental scrutiny from regulators, communities, and investors. Microsoft has not publicly released detailed water consumption figures for the new facilities to allow independent verification. The announcement is likely to prompt comparisons with water-use data from other hyperscalers including Google and Amazon.