The reason bottled water is so popular is because the quality of our tap water is so bad. Funny thing is that the very person (Mayor of San Fran Freako) is in charge of one of the absolute "worst" water supplies in the US. Was one of the first to cancel the cities bottled water contract. Read these: WWW Link WWW Link And these are but 2 of 1,980,000 Google hits on "what's in my tap water".