I mostly live in Indonesia. The CIA (wonderful website for information on all countries) says something like 97% of the water in Indonesia is safe. I brush my teeth with tap water, but bottled water is about $1.50 for 5 gallons, so like everyone else I drink bottled water. Why not? It is almost free. My advice with ice cubes? Always add alcohol .... I use minimal common sense care, and have never had a problem with water anywhere in the world.