
- A study found that more than 20% of reusable water bottles sampled contained coliform bacteria, or fecal matter. Here’s the best way to clean your water bottle and avoid harmful germs.
Like many people, Carl Behnke regularly totes a water bottle around throughout his day to make sure he stays hydrated. From the office to the gym and back home again, Behnke is rarely without it. But Behnke is also an associate professor in the school of hospitality and tourism management at Purdue University, and when he discovered a “biofilm” on the inside of his water bottle while cleaning it, it got his wheels turning. “I realized I probably wasn’t as diligent about cleaning my water bottle as I should be,” he explains. “And that made me curious: If someone who knows about food safety isn’t diligent, what about everyone else?”