If you’re using those gallon-sized jugs from the grocery store, they’re a different beast. These are often made of thinner plastic meant for short-term use, not long-term storage. After a few months, they can start to leach tiny amounts of plastic-y taste into your water, especially if they’re sitting in a warm garage or near a sunny window.
I learned this the hard way. Last summer, I found a three-month-old jug of water under my car seat. The water looked clear, but it had a flavor that can only be described as “dusty sneaker meets plastic factory.” I didn’t get sick, but I also didn’t drink my second sip.
So for everyday emergency storage, unopened, commercially sealed bottles are your best bet. Check the “best by” date on the cap—it’s usually two years out, and that’s your golden ticket.
What If I’m Using My Own Plastic Containers?
This is where it gets cozy—and a little tricky. You know those old milk jugs you rinsed out and thought, “This will be great for water storage”? Please don’t. Milk jugs are made of a plastic that breaks down quickly and can’t handle being refilled. They’re like that friend who’s fun for one road trip but falls apart if you ask them to help you move.
Instead, look for #1 PET or #2 HDPE plastic containers, which are sturdier. Even then, you should replace the water every six months to keep it fresh. Mark a date on the bottle with a permanent marker—like a little birthday reminder for your water supply.
