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.
I have a trip to South Korea coming up and I'm getting some conflicting information. I have two guidebooks (2006 and 2008) which say don't drink the tap water. I have a third guidebook and saw a TV show which both claimed the tap water is fine. All four said that bottled water is plentiful and cheap wherever you go, which based on my previous travels, is usually a sign that you shouldn't drink the local stuff.