this post was submitted on 31 May 2026
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Yup. Water cooling is a closed circuit (unless you shit money or have a near unlimited supply, like with a river nearby). We've been water-cooling all kinds of shit in data centers and production plants forever. In fact, direct water cooling is more efficient than traditional AC, because you don't need to blow a bunch of air around, you just apply cold water to the hot parts, and cool the water back down afterwards. Sensitive stuff uses deionised water anyway, but I don't know if they care enough for DCs. That is kind of expensive to produce and maintain, you really try to avoid larger leaks and spills.
There are plenty of issues with the datacenters, from the bullshit on-site gas turbines to noise pollution to using up the world's RAM supply to the whole replacing humans with "AI" issue. But all of those could be solved with proper regulation.