As promised, it's time for the final splashdown in the battle of bottled vs. tap water. When we left off last episode, bottled water had staged a miraculous comeback thanks to Nike, yuppies, and Orson Welles. Today, it's America's favorite liquid refreshment: we buy more bottled water by volume than any other packaged beverage, even though you can get its less glamorous cousin, tap, delivered directly to your home for mere pennies. So, is bottled water somehow better than tap? Is it safer, or even just nicer tasting? This episode, we dive into the science behind the taste of water (spoiler: it has to do with spit) and explore the fine art of bottled water appreciation, before sharing the secret to making your own DIY Pellegrino. Meanwhile, we've all heard the water horror story unfolding in Flint, Michigan: should we be worried about lead or other chemicals in our tap water—or in the bottles on grocery store shelves? All that, plus our very own water taste test, as we declare the ultimate victor in this war of the waters.

Today, bottled water is ubiquitous and cheap: every single second of every single day, more than a thousand people buy and drink a plastic bottle of water in the U.S.. But it wasn’t always so. In this episode, we trace a centuries-old power struggle as bottled water went from hip to lame to hot again. Why did doctors prescribe the waters from specific springs for everything from hemorrhoids to hypochondria, and how did whaling ships and a golf course help kick off the first bottled water frenzy in America? How did a swimming pool chemical help tap water fight back, and what did Nike, yuppies, and Orson Welles have to do with bottled water's reincarnation from the dead? And what's up with all these oxygen- or electrolyte-enhanced, alkaline, and even magical waters on supermarket shelves today? Listen in now for the first in our two-part deep dive into this battle of the ages: bottled vs. tap. We'll be back in a week with part two, including the science behind the taste of water, the specialist sommeliers who pair water and food, and the secret to making DIY Pellegrino at home.