One cubic metre of water is 1000 liters. A typical 25m swimming pool ("short course" / half of olympic size) is 20-25m wide. That's at least 500 m^2 surface area. At an average depth of only 1m (very conservative even for a recreational pool), that is 500,000 liters just to cycle the water once a year. Estimates I can find suggests 3-7 times as much as that on a yearly basis for a typical recreational pool.

So unless you're talking about a tiny private residential pool you're at least an order of magnitude off.

And besides that: news sites love comparing water usage to things like bathtubs, the average household or swimming pools. The headline would likely be "datacenter uses 100 swimming pools of water per year!" and not "datacenter uses 6 million liters of water per year!"

Now GP comes off as knee jerk.

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