One of the common mistakes of tourists while on vacation in Iceland is buying bottled water. The bottled water content is just the same as the water on the tap! It is so clean however it is empty of minerals. Iceland tap water is geothermal and always has hot or cold option, so perfect to have a hot bath in your own air bnb or hotel room. I was always amazed how this small nation is so efficient with their natural resources, being independent and a tiny island. Safe drinking water hot and cold is a dream priority to developing nations. If you are coming to Iceland someday, I would think bottled water is a good souvenir for loved ones back home. I am a big fan of this.