In this case it should be 62% lower in Australia in general, because water is taken from deep source for entire country.

82%[0] of Australian utilities' water comes from surface sources, so you'd need to look at only the section of the population who drink exclusively groundwater.

[0] https://www.bom.gov.au/water/npr/docs/2022-23/Urban_National...

> Drinking newer groundwater linked to

I only drink older groundwater.

1962 is my preferred groundwater year

The way they wrote it is confused and misleading. I suspect it's a corporate piece to sway people to buy glacial-whatever water.