RO water storage

Milk jugs are fine as they are rated to be food safe. Most trash cans are not food-grade and they will leach phosphorus and other compounds into the water. As these components leach, the plastic becomes brittle. As a matter of fact, Schackmel had this issue. We checked out the food, added phosphate removers, tried everything known to mankind. Unfortunately, every time she topped off for evaporation or did a water change she was adding phosphorus. She was using a good RO/DI unit that was putting out clean water and then the container she was storing it in made the water dirty again.

There are some exceptions. That's why people use Brute trash cans. They won't leach and they won't become brittle and fail making a mess either. Here's a list of the models you can use safely. NSF Certified Products - Food Equipment

Those are the trash cans I use. I just keep the lid on and leave a small powerhead running.