the typical vascular cylinder of a dicotyledonous plant or a gymnosperm, consisting of a ring of collateral bundles of xylem, cambium, and phloem. Origin of eustele.
Tap water is fine in Barbados, go in any restaurant and they will ask if you want water then give a choice of bottled or tap. They wouldn't be doing that if the water was bad. It is one of the few places around the world that I will drink tap water. I certainly don't drink it in the UK.
Drinking water. In countries with poor sanitation, don't drink tap water or use it to brush your teeth unless it has been treated. Filtered, bottled, boiled or chemically treated water should be used. Bottled fizzy drinks with an intact seal are usually safe, as are boiled water and hot drinks made with boiled water.