Tap water contra mineral water

Pepsi's Aquafina and beverage industry leader Coca-Cola's Dasani are both made by purifying water that comes from public reservoirs.

 PepsiCo Incorporated has decided to be transparent about the
fact that its Aquafina bottled water product is made from tap water. Coke told
it would begin posting information online about the results of quality control
testing it performs on its Dasani product by as early as late summer.
The move is widely seen as a compromise to demands from
environmental advocates and political opponents who are growing increasingly
critical of the industry.
By comparison, Danone's Evian and Nestle's Poland Spring
brands are labelled as "spring waters" and are tapped from locations
said to have especially pure water.
Bottled water has grown as a source of revenue for major
beverage companies, while sales of traditional carbonated beverages have
slipped amid growing health concerns and weakened demand.