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.
Water from the hot tap is not recommended for drinking as it often contains elevated levels of metals such as copper which makes the water taste astringent. Cold water in bathrooms and wash rooms is not recommended for drinking as it may be from a tank that is not suitable for drinking water purposes. You can find advice on what to do if your drinking water comes from a tank here.