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Water Fact: Water bottle Hygiene

Archived News Release: July 25, 2023 - What's in our water is important, but have you stopped to think about what you're drinking water out of? Cleaning your reusable water bottles regularly, even if you just use them for water, helps keep them free of bacteria. Over time, these bacteria, as well as mold, can multiply, definitely not something you want to drink! 

Here are a few tips: 

  • Clean your water bottle with soap and hot water on a regular basis.
  • Make sure you use a brush or pipe cleaner to scrub any straws, mouth pieces and crevices your bottle may have so that you get all the germs.
  • If you need to do a deep clean use a mixture of hot water and vinegar to sanitize it. 
  • If the bottle is dishwasher safe, even better!

Avoid letting your bottle sit with water left in it for long periods in between use. Empty the bottle as soon as you are finished with it. This might mean checking your child's book bag every night to make sure the bottle is emptied out. If bottles are left at school or daycare, be sure to have your kids empty them and not drink the water left inside. Ask them to bring the bottles home to be properly cleaned.



Ann Arbor has 123,851 residents, spans 28.97 square miles and is frequently recognized as a foremost place to live, learn, work, thrive and visit. To keep up with City of Ann Arbor information, subscribe for email updates, and follow the city on Twitter and Facebook. The city's mission is to deliver exceptional services that sustain and enhance a vibrant, safe and diverse community.

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