Although technically safe to do so as certified by the World Health Organization, we recommend avoiding drinking tap water if you can afford to do so whilst going on your Bangkok excursions - even most people who live there don’t drink tap water. Buying bottled water is both very accessible and cheap anywhere in the country, so even though drinking from the tap is most likely ok, we still recommend taking some with you so you’re not taking any risks with your once in a lifetime trip to Bangkok! Make sure you keep plenty of bottled water on you throughout your tours in Bangkok to ensure you stay properly hydrated - it’s better to have too much than not enough!