Is Tap Water Safe to Drink in Saint Vincent and the Grenadines?

The Central Water and Sewerage Authority (CWSA) draws mainland Saint Vincent's supply from mountain springs and rivers in the island's volcanic interior. The smaller Grenadine islands lack large freshwater sources and depend on rainwater catchment, cisterns, and small-scale desalination.

Mainland treated water is generally reasonable in quality, though aging pipes can affect consistency. On the Grenadines, cistern water quality depends heavily on individual tank maintenance, and small desalination units can vary in reliability, especially on less-visited islands.

Kingstown and the mainland generally have more consistent treated water. Bequia, Mustique, Canouan, and other Grenadine islands vary significantly by property — upscale resorts often have their own filtration, while smaller guesthouses rely more directly on cisterns.

Mainland water is soft to moderate, roughly 30–80 mg/L; Grenadines rainwater is typically very soft, often under 20 mg/L..

Mainland residents commonly drink tap water; on the smaller Grenadine islands, many rely on cistern or bottled water instead.

• •On the Grenadines, ask specifically whether your accommodation filters cistern or desalinated water
• •Bottled water is a sensible default when island-hopping through the Grenadines
• •Mainland Saint Vincent's mountain-spring water is generally the most reliable source in the country

• •Ask about water sources when island-hopping through the Grenadines
• •Default to bottled water on smaller, less-developed islands