Besides health, there's pollution.
The opposite of a drinking fountain is The Great Pacific Garbage Patch, according to Wikipedia: The Great Pacific garbage patch, also described as the Pacific trash vortex, is a gyre of increased marine debris particles in the central North Pacific Ocean located roughly between 135°W to 155°W and 35°N and 42°N. The patch extends over an indeterminate area, with estimates ranging very widely depending on the degree of plastic concentration used to define the affected area.
If you wonder where these huge collections of garbage come from, drinking bottled beverages contributes.
https://en.wikipedia.org/wiki/Great_Pacific_garbage_patch