As a kid, here in the UK, most schools, public buildings and towns (in the street) had drinking fountains. Most town centres, shopping areas, tourist spots etc had them. Quite often they had a way to fill a bottle too. In the eighties they died out, and you'll rarely to never see one today. Why? They certainly weren't unsafe.
Bottled water producers seem to have managed to put people off our overwhelmingly safe tap water and drinking fountains. Now tap is seen as second rate somehow. Put in a vending machine instead, etc. Drinking fountains in schools and streets are long gone.
So now everyone can buy a Coke or bottled water, complete with single use plastic, and we mistakenly call that progress. The same people seem fine using tap water for tea, ice, juice etc.
Yet another bit of progress that baffles me. :)
I remember in the 80’s when travelling to Europe, whether you could drink the tap water was always a question to ask at the start of the holiday. 30 years later, we are now questioning our own tap water even though the rest of the EU and America have caught up, with water quality that is on par with anything that could be purchased in a bottle.
Tap water and bottled water in Utrecht are pumped from EXACTLY the same source. :)