Anstane

@HongaarseBeer97 Waterbottles are made of plastic, and either due to photo degeneration or through natural causes will slowly dissolve and seep into the water after a while. It's not entirely a problem nor dangerous, but even minute changes in the components of water can alter the taste. 

Case in point Danish water is incredibly rich in calcium, and tastes widely different from water in most other countries due to lacking this component. I know Sweden has incredibly iron rich water... What's the quirk of water in the Netherlands? 

Our tap water is actually pretty good, overall, good enough to drink. Though yeah, I'd rather there be a permanent dispenser then me having to carry a water bottle with me everywhere...

@Tartar To be fair I wouldn't exactly know. I do however know that water from Almere, which is where I live, is (or was, this news is quite old actually) the softest tap water in the whole of Europe. So it has very little calcium in it and it doesn't taste like iron etc. at all. 

I actually did a little research and the softness/hardness of tap water where I live is 4.30. If I compare this to Amsterdam which has 8.40, that's a world of difference. I can really taste a difference in those two kinds of tap water. I'll leave the link here, just in case you want to know more (it is in Dutch, though: http://www.waterhardheid.nl/lijst-waterhardheden-in-nederland) Now I didn't calculate the average, but it seems like it's somewhere between 8 and 9. How this compares to the rest of Europe/the world, I have no idea, but it seems quite alright