In a study published on Monday by the peer-reviewed journal Patterns, data scientist Alex de Vries-Gao estimated the carbon emissions from electricity used by AI at between 33 million and 80 million metric tons.
That higher figure would put it above last year’s totals for Chile (78m tons), Czechia (78m tons), Romania (71m tons), and New York City (48m tons, including both CO2 and other greenhouse gases).
Evaporated for cooling I’m guessing
https://nationalinterest.org/blog/techland/the-hidden-bottleneck-of-ai-data-centers-water
There’s closed loop and immersion (paraphrasing the article), so it’s just a guess.
Not only that, datacenters pollute water with pfas (forever chemicals), making it unsafe to drink.
https://www.theguardian.com/environment/2025/oct/04/pfas-pollution-data-centers-ai
Confession: I haven’t read the OP but a lot of data center studies include the water associated with power generation, which is usually a similar order of magnitude to the cooling water loss.