I F YOU THOUGHT a reusable water bottle was a plain, boring receptacle—brought out of the cupboard only for long hikes—then ...

That water bottle you’re carrying says a lot more about you than ‘hydration’ By . Associated Press. Published April 10, 2025, 10:57 a.m. ET.

If water sits in your bottle for days, it can create a breeding ground for mold spores from the air and pipes in your house to settle and multiply, Dr. Phipatanakul said.

For a reusable water bottle to offset the environmental impact of single-use plastic, it has to be used 500 times. Still, reusable water bottles are the best way to go if you want to be ...