The article says rich people are using 2x as much water as poor people domestically.
FTFY. That’s just household use, Clyde. We haven’t even started with the water usage that makes the rich rich - ie, the private ownership of industry and commerce (which, of course, externalizes the destruction of water resources).
That’s hardly out of the realm of possibility considering the population already has gone up 8x since 1950
That kind of population growth is a thing of the past. The only way to successfully reverse that would be by design - such as the measures taken by certain aspects of the US political establishment to enforce patriarchal norms through institutionalized violence (ie, the criminalization of women’s healthcare).