I agree that those numbers can seem huge without proper context.
For me, that BBC story, and the others, illustrates a trend; tech giants installing themselves in ressource-strained areas, while promoting their development as drivers of economic growth.
> A small data centre using this type of cooling can use around 25.5 million litres of water per year. [...]
> For the fiscal year 2025, [Microsoft's] Querétaro sites used 40 million litres of water, it added.
> That's still a lot of water. And if you look at overall consumption at the biggest data centre owners then the numbers are huge.
That's not credible reporting because it makes no effort at all to help the reader understand the magnitude of those figures.
"40 million litres of water" is NOT "a lot of water". As far as I can tell that's about the same annual water usage as a 24 acre soybean field.