The problem isn’t home usage, or data centers. It’s the total lack of investment since the water companies were privatised and moved to a model of money extraction for shareholders. Now we have no new capacity in years and more leaks (waste and clean) than ever, and yet it’s always the public who need to save a little more or pay increased bills.
Successive governments (both sides) have been shown to be totally spineless with water regulation, despite significant public outrage. Privatisation has been a huge failure and yet we appear to be stuck in this position.
Or in other words, of course he says that; it's not really a useful analysis is it?