An unopened bottle of water doesn’t expire like yogurt, but manufacturers stamp a date on there anyway. That date is more about the plastic than the water. After a couple of years, the bottle itself starts to break down, and nobody wants a water-flavored microplastic smoothie. It won’t kill you, but it’s not a premium dining experience.
Once you open it, the clock starts ticking. I’d give it about three or four days in the fridge before it tastes like “better than nothing.” After a week, even your dog looks at it sideways. Your best move? Treat an open bottle like a leftover burrito: if you wouldn’t trust it on taco night, don’t trust it for hydration.
Do Water Go Bad at Lori Francois blog
A personal anecdote that will make you nod
Last year, I found a bottle of fancy spring water I’d saved for “a special occasion.” It was a year past its printed date. I opened it, took a sip, and immediately went, “Why does this taste like the inside of my grandmother’s attic?” I didn’t get sick. I just got retroactively annoyed. That’s the whole experience in a nutshell.
Another time, I drank from a bottle that had been sitting on my nightstand for two weeks, only to realize it was actually my wife’s from her bedside table, and she’d sipped from it. I felt a primal, caveman-level betrayal. Water doesn’t go bad. But relationships? That’s another story.
