While the tap water in St. Thomas (U.S. Virgin Islands) is technically treated and often meets federal safety standards at the source, it is generally not recommended for drinking by tourists. Most of the water on the island is "cistern water"—collected rainwater stored in large underground tanks—or desalinated seawater. While this water is perfectly fine for showering and brushing your teeth, the taste can be unappealingly "flat" or metallic, and the plumbing in older hotels or villas may introduce sediment or bacteria into the supply. In 2026, most resorts and high-end rentals provide filtered water dispensers or complimentary bottled water to guests. If you are staying in a vacation rental, it is a "pro-tip" to purchase a large multi-gallon jug of spring water from a local grocery store like "Pueblo" or "The Fruit Bowl" to use for coffee and hydration. For those who want to be eco-friendly, bringing a filtered water bottle (like a Brita or LifeStraw bottle) is an excellent way to safely consume the local supply without relying on single-use plastics.