Leaving aside the negativity... If the landowner would object to that, surely they'd object to people collecting water there?

In this country, there have been wells dug for centuries. In later times, all country properties had their own well and there were "Village wells" too. In towns, depending on the size, there were several.

Nowadays, if society broke down, life would be very difficult for most people.

As for those in the appealing advert, they've made absolutely no effort to improve things for themselves.