TapWaterGuide
Worldwide water safety reference

Is tap water safe to drink? Check any country or city.

The worldwide reference for tap water safety, built on WHO, EPA, EWG, and CDC guidance — for travelers and for checking your own city.

52
Countries Covered
70
Cities Covered
WHO · EPA · EWG · CDC
Data Sources

Popular Countries

JapanMexicoItalyThailandIndiaSpainFranceCosta RicaGreeceVietnamMoroccoSingapore
Browse all 52 countries →

Popular US Cities

New York City Safe
New York
Chicago Safe
Illinois
Los Angeles Safe
California
San Francisco Safe
California
Houston Safe
Texas
Miami Safe
Florida
Seattle Safe
Washington
Las Vegas Safe
Nevada
See all US city rankings →

Popular World Cities

Paris Safe
France
London Safe
United Kingdom
Rome Safe
Italy
Tokyo Safe
Japan
Bangkok Not Safe
Thailand
Bali (Denpasar) Not Safe
Indonesia
Dubai Generally Safe
United Arab Emirates
Cancún Not Safe
Mexico
Browse all world cities →

Best Tap Water Worldwide

Countries where tap water is safest and best-tasting, from Iceland to Singapore.

Countries to Avoid Tap Water

Where to stick to bottled or filtered water, and why.

Best US City Water

Which American cities have the cleanest municipal tap water, and why.