Aiden adds that while we need bacteria and don’t need things to be sterile at all times, it’s a good idea to wash a water bottle regularly. The longer the bacteria is left to propagate ...

“To minimise your risk of getting sick, you should ideally clean your water bottle after each use,” Grant says. “As a minimum, you should aim to wash it thoroughly at least a few times a week.

Regardless of the different reasons, there is one thing that reusable water bottle owners likely all do, and that is not wash their water bottles often enough. Studies have found that reusable water ...