>Portable water was not an issue, because industrialization did not yet happen and most water sources (and hundreds of wells dug around the country) would have clean, drinking water. Did you think a thousand years ago, people used water filters?

Potable water hasn't been an issue strictly introduced by industrialization, it was exacerbated by increased population density in areas where water sources were more likely to be contaminated. There are plenty of nasty biological contaminates out there that make water non-potable: various bacteria, viruses, parasites, etc. as well as inorganics like lead leaching that led to bad water sources (not to mention droughts). Potable water has always been an issue (to this day), industrialization agreeably added new issues although it also introduced water processing science to make non-potable waters potable in many places.

We should celebrate modern industrialized water processing, not shun it.