Can you drink the tap water?
Type where you are. You get the answer, the figures behind it, and who published them.
249 countries · 2,500 cities · WHO, CDC, Numbeo and local water authorities
Somewhere to start
What this is for
The answer, with its source
The verdict comes first, then the evidence under it: the WHO's coverage figure, the CDC's advice to travellers, and how residents themselves rate the supply. Every one of those links back to the body that published it.
What bottled water costs
Two litres a day adds up. The savings calculator works out what you would keep by drinking the tap instead, in your own currency.
The whole world at once
The map shows every country we hold data for, shaded by score, with the same figures as a table underneath.