If you are holidaying in Africa or South America, bottled water will be the order of the day as tap water is unsafe for human consumption. And in Asia only a handful of places are safe to drink from the tap, including Hong Kong, Japan and South Korea. read more
However, don't immediately assume that Europe is completely safe to drink tap water. Places like Ukraine, for example, have the worst tap water quality in the whole world. Eastern Europe is terrible at water quality, while Western Europe is fine. read more
You need drinking water no matter where you go, but with travellers diarrhea, giardia, hepatitis A, typhoid and cholera among the illnesses that can be transmitted with bad water, it pays to know which parts of the world guarantee clean, safe tap water, and where you should be sourcing bottled water instead. read more