Bottled water
More than 25 percent of bottled agua comes from municipal water supplies. Sure, it’s treated and filtered. But it’s still tap water. If you’re bugged by weird-tasting H2O (hi there, Phoenix!), then treat it yourself with a pitcher or a sink-mounted filtration system. Those with their own wells can have the water tested. Do your wallet a favor, and skip the bottled stuff. You’ll be doing the planet a favor, too, since all those plastic bottles are going to take hundreds of years to decompose.