This is in the US even. Working drinking fountains are not as ubiquitous as you might think in a lot of areas.
please avoid writing random bullshit numbers, just say "the majority". If you ever went to a touristic place outside a metropolis you would have seen plenty of people refilling their bottles at public fountains.
Seeing "plenty of people refilling their bottles at public fountains" says nothing compared to the vast majority that doesn't, and doesn't even carry bottles.
Also, regarding "please avoid writing random bullshit numbers", please avoid being rude.
In any case, you don't have to justify the rudeness, a simple "sorry" would have sufficed.
If you wouldn't mind reviewing https://news.ycombinator.com/newsguidelines.html and taking the intended spirit of the site more to heart, we'd be grateful.
Not saying it's good. In fact, it's quite bad and harmful. But it just is.