Here’s a “must-read” article from Consumer Reports:

Score one for the green movement. For years as sales of bottled water climbed, environmental groups said it was likely less safe than tap water even without taking into consideration the impact on the enviroment. This week the government agreed. A study released by the General Accounting Office said that bottled water undergoes less scrutiny than tap water, which must meet a tougher safety standard. The GAO study found that the regulation of bottled water (under the Food and Drug Administration’s Food, Drug, and Cosmetic Act) is less strict than the Environmental Protection Agency’s regulation of tap water (under the Safe Drinking Water Act). – from CR