It should come as no surprise that the Coca-Cola Company developed a program to discourage restaurant customers from drinking tap water (Business Day, Aug. 20). It is not alone. Robert S. Morrison, vice chairman of PepsiCo, said in 2000, ”The biggest enemy is tap water.”
Ironically, both PepsiCo and Coca-Cola use perfectly potable tap water as the source of their bottled waters, Aquafina and Dasani. I guess tap water is O.K., if we can be made to pay for it.
Tap Water, in a Bottle - Letter - NYTimes.com

