[AshamedCaptain]

Where is the source for that? I am only familiar with one site, the STMicro one in the Alps, which already used 4000 acre-feet / 5 million m³ per year in 2023 [1], and it's been at least doubled since then. This is a huge chunk of the total water consumption of the region, and there are NIMBY demonstrations frequently because of that [2]. It's also surprisingly polluting. Whether you think the value is worth or not is a different story (I worked there, so guess).

[1] https://www.st.com/content/dam/aboutus/sustainability/report...

[2] https://stopmicro38.noblogs.org/post/2026/03/17/rando-pas-de...

50000 for the entire industry is bullshit, even if you limit it to the US.

[jeffbee]

The figures in that report are consistent with what I said. This is because the usage we're talking about is evaporation. This should not be confused with withdrawals. Semiconductor industry mainly withdraws water and then discharges it as effluent. Evaporation is a minor component of their withdrawals.

[AshamedCaptain]

No, the report is already not counting whatever can be reused. It's the point of it.

[jeffbee]

I'm not talking about the recycling rate. Even if that goes to zero it doesn't change the story here. The point is they aren't boiling the water, for the most part. They discharge it in a pipe.

[AshamedCaptain]

And? I really do not think anyone is complaining here about the water disappearing into thin air or its atomic components or whether it goes in a pipe or into the moon. The definition of using water is quite clear (you can no longer drink it) and unless I am misreading you are totally distorting it.

[jeffbee]

Yeah I think you are misreading it. The manner in which a data center (or a thermal power station, or any highly energetic industry) "uses water" is literally the water disappears into thin air, and doesn't come down again until it's thousands of kilometers downwind.