Yes, boiling would work but who has time to boil water all day everyday? It is not necessarily true that all bottled water is just fancy tap. I have noticed a huge difference is taste and quality of water. For instance, I do not like to drink water very much at all. Yet I can drink Fiji water and this store brand called Meijer Spring Water all day long, that water is so good. So there must be some real difference if a non-water loving person is all of a sudden turned on to certain types of water like the two I just mentioned.