Producing bottled water requires as much as 2000 times the energy cost of producing tap water1 and is not as strictly regulated for purity to boot. When dining out, decline the bottled water and tell the waiter to bring you plain ol’ tap water instead. If you’re at a fast casual restaurant, bring your reusable water bottle and fill up with water from the soda fountain. An added bonus? This one will also start saving you green immediately, too. Few people realize they pay more for bottled water than they do for gasoline. While sipping zero calories is a great strategy for getting lean (because liquid calories don’t register with your brain, so you don’t cut back on food), remember that zero calories doesn’t always mean zero impact.
1Pacific Institute, Energy implications of bottled water, 19 February 2009. http://iopscience.iop.org/1748-9326/4/1/014009/pdf/erl9_1_014009.pdf.