When we take a shower, we’re not consuming water. We’re consuming the energy required to pump the water to our house, heat it, pump it to the treatment plant, treat it, and pump it back out again.

Saving water in the US isn’t going to make more water available for Australia.

And of course water-intensive agriculture occurs in areas where irrigation infrastructure is well-developed – again, reducing water use there isn’t going to make more water pop up somewhere else.