This article originally appeared on Travel + Leisure.
It’s something we seldom remember until it’s too late—where it’s definitely not a good idea to drink the tap water.
So, in the spirit of healthy global hydration, online travel booking company Just The Flight created a definitive guide to where Americans can and cannot drink tap water. The data was collected from information gathered by the Center for Disease Control and put together in an interactive map: Where on Earth Can I Drink Tap Water?
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The map informs travelers in which countries they can drink tap and the prices of bottled water and beer there.
From the map, it’s possible to see whether or not it’s cheaper to buy a bottle of water or—as in many parts of Europe and Africa, it’s best just to grab a beer on the road and then chug down free waters at the hotel later.
But for those who are just looking for plain data on tap water before they book a trip, the map answers very simply “yes” or “no.”
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Whenever traveling to a country where tap water is not safe, remember the rule also extends to fresh fruit and vegetables. Avoid produce unless it’s been peeled and skip ice in drinks. All bottled water should be bought with a safety seal still intact as vendors in some countries are known to recycle plastic bottles with tap water.
Travelers can prepare for an illness by packing Pepto-Bismal or Imodium in their suitcases.
by Cailey Rizzo