Though many people use refillable water bottles, if you do not wash them before refilling, it can be compared to licking your toilet. After a week without washing, water bottles can have approximately 900,000 germs in a colony which is extremely unsanitary for any human. This has lead many people to state that not washing water bottles can lead to various diseases.

Key Takeaways:

• You may be hydrated, but sipping from your favorite fancy water bottle isn’t as healthy as you might think.
• New research shows that the water bottles we are refilling are filled with germs.
• Drinking water from a bottle that’s already been used is the same as licking your toilet.

“Turns out not all water bottles are created equal. Slide-top bottles were found to be the germiest, with 933,340 CFU (germs) per square cm. Squeeze top and screw-top bottles weren’t as bad, with around 160,000 CFU per square cm. And the cleanest bottles were straw-tops, which had just 25,400 CFU per square cm. Read more: https://metro.co.uk/2016/08/10/refilling-water-bottles-without-washing-them-is-as-dirty-as-licking-your-toilet-6059814/#ixzz4H1xXAkmL”

https://metro.co.uk/2016/08/10/refilling-water-bottles-without-washing-them-is-as-dirty-as-licking-your-toilet-6059814/