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Amazon data centers used 2.5bn gallons of water in 2025
(www.datacenterdynamics.com)
This is a most excellent place for technology news and articles.
Yeah as far as I was able to find out even closed loop systems have to be regularly bleed out to control mineral buildup. People argue about closed loop systems as it's some kind of perpetum moblie you fill it up and it lasts forever which is not true, that's why they don't use coolants either because none of that lasts forever, they're just saving a lot of money by being able to dump toxic wastewater without immediate ecological disaster