Yes, the tap water in St. Barts (Saint Barthélemy) is generally safe to drink, but there are some nuances that travelers in 2026 should be aware of. Most of the island's water supply comes from a desalination plant in Gustavia, which processes seawater into high-quality potable water that is then distributed via trucks or pipes. While this water is safe and meets French/EU health standards, many of the island's luxury villas also utilize cisterns to collect rainwater from rooftops. While cistern water is often filtered and treated with UV light, its quality can vary depending on the maintenance of the specific property. Because of this, many locals and tourists prefer to drink bottled water (like the local brand Cristaline) for its more consistent taste. If you are staying in a high-end resort, the tap water is almost certainly safe and well-filtered. However, if you have a sensitive stomach, you might stick to bottled water for drinking while using the tap water for brushing your teeth and showering without any concern.