Tap water is the water from your local reservoir, river, or aquifer that’s been treated by your city to be safe. It’s got added fluoride for your teeth and chlorine to kill creepy-crawlies. That’s why your shower sometimes smells like a public pool—your water is working overtime.
But here’s the kicker: tap water also contains minerals like calcium and magnesium. These little guys are why your tea leaves a ring in the mug, but they’re also why plants love it. Basically, tap water is the Robin Hood of the water world—it takes from the environment and gives to your coffee maker’s descaling schedule.
