The UN asked every AI company to disclose their water use. Here's who actually did.
In June the UN launched an AI Environmental Transparency initiative asking major AI companies to publish carbon, water and land footprints. I went and looked at what's actually been disclosed since.
Google — 10.9 billion gallons in 2025, company-wide. Up 34% in a year, more than double 2021. Their own 2026 Environmental Report.
Amazon — 2.5 billion gallons. Their first ever water figure, published June 2026.
Microsoft — declared itself water positive, five years early.
The interesting part isn't the totals, it's the scope. Google's number is company-wide, not data-centre-only. Amazon reports water usage effectiveness rather than an absolute for most facilities.
Almost nobody counts the indirect water — the amount consumed generating the electricity — and per the IEA that's about two-thirds of the total.
So the disclosures exist now. They're just not comparable. Which is arguably the same problem as not disclosing.