I’m trying to find reliable numbers on AI water usage in 2025, but I keep seeing conflicting reports about data center cooling and total consumption. I need help finding a clear, trustworthy source because I’m using this for research and don’t want to cite inaccurate information.
You’re seeing conflicting numbers because there is no single clean 2025 total for “AI water use.” Most sources mix three different things.
- Direct on-site water use at data centers, mostly cooling.
- Electricity-related water use, from power plants feeding the grid.
- Model-specific estimates, like one chatbot query or one training run.
If you want a trustworthy source, start with company environmental reports and peer-reviewed papers.
Best sources:
- Microsoft Environmental Sustainability Report. It showed water consumption rose to about 1.7 billion gallons in 2022, up sharply during the AI buildout. This is one of the most cited hard numbers.
- Google Environmental Report. Google reported about 6.1 billion gallons of water consumption in 2023 across offices and data centers. Again, a primary source.
- The paper by Shaolei Ren and coauthors on AI water footprint. This is the source behind many headlines about ChatGPT water use. Useful, but it includes indirect water tied to electricity too, so people often misread it.
For 2025, total global AI-only water use is still an estimate, not a settled figure. The most cited forward estimate says AI-driven water withdrawal could reach 4.2 to 6.6 billion cubic meters globally by 2027. That comes from Ren’s work and related analysis. It is not a measured 2025 total.
So if your goal is accuracy, say this: there is no reliable audited global number for AI water usage in 2025. Use company reports for measured data, and label global 2025 figures as estimates only. That’s the cleanest answer, tbh.
Short version: you probably will not find a single reliable, audited number for “AI water use in 2025” because that number basically doesn’t exist yet in a clean form.
Where I’d slightly push back on @andarilhonoturno is this: company sustainability reports are useful, but they’re not AI-only numbers. They’re total corporate or data center water numbers, which includes a lot more than just AI workloads. So they’re solid primary sources, just not a direct answer to your exact question.
If you need something citable, I’d frame it like this:
- No verified global AI-only water total for 2025 is publicly available
- The best hard numbers come from:
- Google environmental reports
- Microsoft sustainability reports
- local water permits / utility disclosures for major data center sites
- peer-reviewed work by Shaolei Ren and others for estimates
Also watch the units. A lot of articles mix up:
- water withdrawal vs water consumption
- direct cooling water vs indirect electricity-related water
- all data centers vs AI specifically
If this is for a paper, honestly the safest sentence is:
“Published 2025 AI water use figures are estimates rather than audited global totals, because reporting standards do not isolate AI workloads from broader data center operations.”
That’s probly the cleanest way to say it without overclaiming.