There are few things on earth easier to purify, to nearly 100% levels, than water. It’s a simple, distinct chemical compound that separates from nearly every pollutant and other chemical with the gentlest of pushes. It can be done with scraps and sticks in the desert. It can be done on household and commercial levels with simple, low-maintenance equipment. And the result, from pole to pole and longitudes around, whether you start with slop from the Paris sewers or delightfully mineralized fossil water from a deep spring, is… H2O. It’s not like it’s some kind of bad fruit or spoiled meat or complex substance that varies from place to place and crop to crop, year to year so there’s some reason to be fussy about when and where it came from. Water you drank today emerged from someone else’s urethra, probably just days or weeks ago.
There is no reason to ship a drop of water further than the intersection of two spigots. It’s the same stuff, and can be turned completely pure right where you’re drinking it.
So all the complaints about how your household or county water is sooooo bad you just have to drink stuff freighted in from France or Fiji is self-serving bullshit. You live in Texas or Detroit and haven’t invested in a decent home conditioning or filtration (or even distillation) system to give you plentiful, cheap, tasty water? You deserve brown teeth and rancid farts. And to have spent far more of your so-plentiful income hauling water home from someone smarter than you about it.