The way they measure water consumption is genuinely unbelievably misleading at best. For example measuring the water evaporated from a dams basin if any hydroelectric power is used.
Counting water is genuinely just asinine double counting ridiculousness that makes down stream things look completely insane. Like making a pound of beef look like it consumes 10,000L of water.
In reality of course running your shower for 10 to 15 hours is no where near somehow equivalent to eating beef lasagna for dinner and we would actually have a crisis if people started applying any optimization pressure on these useless metrics.