The reason I drink bottled water is because it is superior to tap water and does not contain chemicals like fouride and traces of lead and other chemicals added to the water that people's bodies aren't meant to ingest. Brita water filters do not filter flouride and some other chemicals and the only way to get rid of those chemicals is through reverse-osmosis filtration which Dasani does with their water. In this process, the minerals are removed but are added back again by Dasani. Great Water.
FYI - Flouride does not prevent cavaties. It slightly but insignificantly helps prevent tooth decay and only if applied topically. Flouride is not meant or suppose to be ingested and will build up in the body and cause ailments and side affects such as low IQ and flourosis..