Though the average lifespan varies, experts suggest that certain types—like hard plastic bottles ... It’s not uncommon for mold to develop on the inside of a water bottle over time.

Whether it’s stainless steel, glass or plastic, Dr. Sumego said all reusable water bottles need to be regularly washed to ...

Whether it’s stainless steel, glass or plastic, Dr. Sumego said all reusable water bottles need to be regularly washed to ...