Is your water bottle a breeding ground for bacteria? Whether you reuse a commercial water bottle like Poland Spring, Aquafina, Evian and many other brands, or one that’s meant to be refilled, you have to wash it with hot water and detergent daily. This is especially true in warm weather or if you leave your bottle in a warm place.
Bottles, specifically the commercial narrow- necked ones, are hard to clean, so they can be bacterial breeding grounds. Also, don’t refill commercial bottles more than a few times because the plastic can develop cracks that allow bacteria to enter.