Also, it's not even like the microbiota in a lot of the countries they say this about are "worse" at all, it's just that they're different and your body is not used to them. Like, people that are there drink the water and they're fine. Just like, drink a tiny bit of it at a time if you're gonna be around for a while, and in a few weeks you'll have no problems with the tap water just like everyone else.