It's quite correct that when in the tropics it's wise only to drink bottled water. I've travelled widely in West Africa and have always used bottled water, even to brush my teeth. However like a fool, having arrived late at night after a long flight, I used THE TAP to brush my teeth (only the once!) and immediately contracted giardiasis (intestinal parasite). This was in Accra. My doctor also goes to West Africa every year, and she told me it's a classic, one teeth-brushing via the tap, and you get almost anything from the water, even cholera or typhoid. But, are the bottles merely filled from the taps over there and resealed?? Yew!