had a good guidebook with me when I was in Rome. It said that the water is excellent and showed the trick with the hole - so I knew it and used it. Mostly I fi

had a good guidebook with me when I was in Rome. It said that the water is excellent and showed the trick with the hole - so I knew it and used it. Mostly I filled a pretty small bottle with water and carried that around. Didn't had to carry much, because I could refill it on nearly every corner.