The importance of a reusable water bottle cannot be understated. It sees us through WFH, the gym, and our daily travels. It saves on plastic waste and keeps us healthy and hydrated.
But despite it playing such an essential part in our lives, most of us are failing to clean ours regularly.
Do you ever think about what type of bacteria might be living in your water bottle? Well, wonder no more, because the team has investigated what exactly we could be drinking when we take a sip.
For their study, researchers swabbed various parts of water bottles including the spout lid, screw-top lid, straw lid, and squeeze-top lid, three times each – and found two types of bacteria present: gram-negative rods and bacillus.
The researchers estimated colony-forming units (CFUs) to estimate how many microbes are in a sample. By their count, reusable water bottles have an average of 20.8 million CFUs of bacteria, with the most CFUs found in spout-top and screw-top bottles, which had 30 million CFUs. Squeeze-top bottles were the cleanest, with only a tenth of that portion of bacteria (3 million CFUs).