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Why You’ve Been Cleaning Your Water Bottle All Wrong

We have some bad news: your water bottle can be a breeding ground for bacteria, thanks to the sealed lid and droplets of water that form at the top. And unfortunately, the quick, daily rinse so many of us do doesn’t totally get rid of those pesky germs. What’s more—a recent study by TreadmillReviews.net has revealed how many germs are actually lurking in your water bottle.

The Shocking Results

Based on the 12 water bottles tested, researchers found that reusable drinking bottles can be crawling with an alarming number of viable bacteria cells: more than 300,000 colony-forming units per square centimeter (CFU/sq cm). What?!

To get a sense of what this really means, the average pet toy has less than 3,000 CFUs. That basically means it could be safer to lick your dog’s toy instead of taking a swig from a not-properly-cleaned water bottle.

RELATED: You Won’t Believe The Germs Lurking At The Gym

Glass vs. Stainless Steel vs. Plastic

A glass or stainless steel water bottle is a much better choice than plastic; plastic tends to be a bigger breeding ground for bacteria. However, glass is dishwasher safe, which is an ideal way to sanitize your bottles. There are also fewer crevices and tough-to-clean spots on these types of bottles, making it easier to fully scrub out all those germs.

“Unlike aluminum and stainless steel, glass requires no liner and doesn’t transfer unwanted tastes to beverages,” says Roy Mabrey, CEO of Lifefactory, who manufactures water bottles.

In addition, some find stainless steel is ideal for active individuals because it’s lighter than glass, keeps water cool and is less prone to bacteria than plastic. “Higher-quality stainless steel is smooth and non-porous, eliminating pockets where bacteria can reside,” explains Lucas Alberg of Hydro Flask. “This means that products like ours, which are made from pro-grade 18/8 stainless steel, retain less bacteria and as a result, less odors and residual flavors,”

Water Bottle Cleaning Tips

Be sure to run your water bottle through the dishwasher or hand wash it thoroughly after every use. Use warm water and soap to thoroughly rinse your bottle. Or you can use one Tablespoon of bleach per quart of water to sanitize your water bottle. Use a clean towel to clean and dry the water bottle. Leave the lid open to allow it to dry completely.

RELATED: How To Clean Your Hydration Backpack

Fara Rosenzweig

Fara Rosenzweig

Fara Rosenzweig is a writer, editor, and certified personal trainer. She got her first taste of the gym at age 14 and fell in love with the fitness crowd. After suffering a back injury her freshman year of college, she had to set her ballet slippers aside and rehab her back. That’s when she found her passion for teaching fitness and helping others challenge themselves. Her senior year of college she ran in her first 5K and traded her ballet slippers for the latest (and brightest) pair of running shoes. Fara loves talking health, sports and fitness with any one and everyone. Her love for storytelling earned her an Emmy Award and has been seen in many other publications, such as Refinery29, Active.com, MyFitnessPal and Health.