The award for the best drinking water in the Caribbean almost always goes to Aruba. The island has no natural fresh water sources, so it has built one of the world's most advanced and largest desalination plants, the WEB Aruba N.V. The water produced here is of such high quality that it is often referred to as "Aruban Champagne" by locals; it is perfectly safe to drink directly from the tap and often tastes better than expensive bottled water. Other islands with excellent, European-standard tap water include Bonaire and Curaçao (the other "ABC" islands), which also utilize sophisticated desalination technology. Martinique and Guadeloupe, as overseas departments of France, also follow strict EU water quality regulations, making their tap water safe for visitors. In contrast, while water on islands like Jamaica or Puerto Rico is generally treated, many travelers still prefer bottled water to avoid "traveler's stomach" caused by different mineral balances. If you are staying in Aruba in 2026, you can save significant money and reduce plastic waste by simply refilling your reusable bottle from the tap.