Explore the 10 Countries With the Most Tap Water Destination Guides

Explore the ten countries with the most destination tap water guides, with direct links to water safety advice for more than 40 popular cities and holiday regions.

Published on

July 21, 2026

Can I Drink the Tap Water now features more than 100 destination-level water safety guides, helping travellers check whether they can safely drink the tap water in individual cities, islands and holiday regions around the world.

Our destination guides go beyond general country-level advice. They explain whether local tap water is safe to drink, whether ice is generally safe, when bottled water is recommended, and whether boiling or filtering may be necessary.

Some countries now have considerably more destination coverage than others. Here are the ten countries with the largest number of destination tap water guides currently available on the site.

1. Spain Tap Water Guide

Spain currently has six individual destination guides. Although tap water is generally treated throughout the country, its taste, mineral content and suitability can vary significantly between mainland cities and popular islands.

Explore our Spain destination guides:

2. Mexico Tap Water Guide

Mexico also has six destination guides covering several of the country’s most visited cities and coastal holiday areas.

Water conditions and hotel purification systems can differ between destinations, so travellers should check the specific location they are visiting rather than relying only on general advice for Mexico.

Explore our Mexico destination guides:

3. United States Tap Water Guide

The United States has six destination guides covering major mainland cities and popular island destinations.

Tap water is generally safe in most major American cities, but local water sources, treatment methods, mineral content and temporary advisories can still vary.

Explore our United States destination guides:

4. Thailand Tap Water Guide

Thailand has five destination guides covering its capital, northern cultural centre and several of its most popular beach destinations.

Tap water is not generally recommended for direct drinking in Thailand. However, bottled water availability, ice safety and hotel water systems can vary by destination and venue.

Explore our Thailand destination guides:

5. Vietnam Tap Water Guide

Vietnam currently has four destination guides covering the country’s largest cities and two of its most popular central coastal destinations.

Visitors should generally avoid drinking untreated tap water in Vietnam, but advice about ice, filtered water and hotel-provided water can differ between locations.

Explore our Vietnam destination guides:

6. Australia Tap Water Guide

Australia has three destination guides covering major cities and one of the country’s most popular island holiday regions.

Explore our Australia destination guides:

7. Egypt Tap Water Guide

Egypt has three destination guides covering the capital and two major Red Sea resort areas.

Water arrangements can differ significantly between local homes, city hotels and large international resorts, making destination-specific advice particularly important.

Explore our Egypt destination guides:

8. Greece Tap Water Guide

Greece has three destination guides, including mainland Athens and two heavily visited island destinations.

Tap water conditions can differ considerably between the mainland and smaller islands, where desalinated water or limited local supplies may be used.

Explore our Greece destination guides:

9. Japan Tap Water Guide

Japan has three destination guides covering Tokyo and two of the country’s most important cultural and tourism centres.

Explore our Japan destination guides:

10. New Zealand Tap Water Guide

New Zealand has three destination guides covering major North Island and South Island tourism centres.

Explore our New Zealand destination guides:

Find the Water Advice for Your Next Destination

Country-level advice is a useful starting point, but water quality and local practices can change between cities, islands and resort areas within the same country.

Before travelling, check both the relevant country guide and the specific destination guide for your trip.

Explore all destination tap water guides

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