Does Bacteria Grow In Reused Water Bottles?

by | Last updated on January 24, 2024

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Its growth in reusable drinking water bottles is not clear even though they have become more popular and used by children and adults daily everywhere. This study found that

there is an extremely high level of bacteria content and a rapid microbial growth in reusable drinking water bottles

.

Do reusable water bottles have bacteria?

According to testing done by EmLab P & K,

reusable water bottles carry all sorts of germs

. Here is a brief look at the results: Reusable water bottles can be crawling with as many as 300,000 colony forming units per square centimeter (CFU/sq cm). By comparison, your pet’s water bowl has on average 43,000 CFU/sq cm.

Is it safe to reuse water bottles?

Disposable water bottles are usually made of polyethylene terephthalate (PET). As of 2020,

there is no solid evidence that reusing PET water bottles raises the risk of chemicals leaching into the water

. However, you should always throw away bottles that have cracks or are showing other signs of degradation.

Can you get sick from drinking out of an old water bottle?


It’s highly unlikely old water will make you ill

However, even smelly bottles are likely just encrusted with saliva, mouth bacteria, or even some mildew or mold, and there’s likely nothing to worry about.

What bacteria grows in old water bottles?

They discovered bacteria contamination in 83 percent of the used plastic bottles. Most prevalent were

Staphylococcus aureus (found in 27 percent of the bottles) and E. coli (found in 17 percent)

.

How long do reusable plastic bottles last?

If you decide to use reusable plastic bottles, plan to replace them every

two to three years

, or if you notice signs of wear. Depending on the reusable water bottle, you might be able to recycle it when you are done with it.

Are reusable water bottles sanitary?

Based on an analysis from the environmental testing firm EmLab P&K,

the average reusable water bottle has over 300,000 CFUs

(that is, bacteria colony-forming units). That equates to roughly six times the amount of bacteria found on pet bowls.

How often should I clean my reusable water bottle?

“You need to wash your water bottles

after every use

,” Sansori says, “or daily if you refill throughout the day. It may only hold water, but bacteria breeds in damp, dark environments like the inside of the bottle.”

Can bacteria grow in stainless steel water bottles?


Stainless steel bottles are naturally anti-bacterial

and don’t develop germ-harboring cracks, Shape reported, making them perhaps your best bet for a clean(ish) bottle.

How do you know if a plastic bottle is reusable?

You’ll see

all plastic products are labeled with the recycling symbol with a number—from one to seven—inside

. If your container is made of plastic #1, or polyethylene terephthalate (PET), you shouldn’t reuse it according to the Sierra Club’s plastic guide—instead just recycle these containers.

How many times can you reuse plastic bottles?

Health advocates advise against reusing bottles made from plastic #1 (polyethylene terephthalate, also known as PET or PETE), including most disposable water, soda, and juice bottles. 3 Such bottles may be safe for one-time use but

reuse should be avoided

.

How long is water safe in plastic bottles?

The U.S. Food and Drug Administration (FDA), which regulates the bottled water industry, does not require a shelf life for bottled water. Bottled water can be used indefinitely if stored properly, but we recommend

no more than two years for non-carbonated water, and one year for sparkling water

.

How long is water good for in a water bottle?

✅ What is the shelf life of unopened bottled water? The recommended shelf life of still water is

2 years and 1 year for sparkling

. The FDA does not list shelf life requirements and water can be stored indefinitely however bottled water plastic leaches over time and can effect taste.

What happens if you drink water with bacteria in it?

The presence of coliform bacteria, specifically E. coli (a type of coliform bacteria), in drinking water suggests the water may contain pathogens that can cause

diarrhea, vomiting, cramps, nausea, headaches, fever, fatigue, and even death sometimes

.

What happens if you leave water in a bottle for too long?

You should avoid drinking water left open for a very long time. The water left overnight or for a long period of time in an open glass or container is

home to numerous bacterias and is not safe for drinking

. You never know how much dust, debris, and other small microscopic particles might have passed into that glass.

How do you get bacteria out of a water bottle?

She recommends starting by cleaning the bottle with soap and water. Next,

spray the bottle with either hydrogen peroxide or vinegar

. (It doesn’t matter which you use first since each kills different strains of bacteria.) Allow the spray to sit for 3-10 minutes, then wipe.

How quickly does bacteria grow in a water bottle?

The bacteria number can quickly increase to

1-2 million counts/ml

in the bottle one day later.

How long does a plastic water bottle take to decompose?

Why? Both processes are dependent on bacteria that consume and breakdown waste into simple matter. But PET is made with chemicals that bacteria cannot consume. That is not to say that plastics can’t breakdown, they do, but it takes a long time; plastic bottles take

up to 450 years

to decompose in landfill.

How do you clean reusable bottles?

For a less intense but still effective way to give your reusable bottle a thorough cleaning,

fill it with equal parts white vinegar and warm water and leave it to soak overnight

. The next day, rinse the bottle out, give it a soapy scrub with your brush to ensure there’s no lingering vinegar taste, and be on your way.

Why does the inside of my water bottle get slimy?

What’s a biofilm? We wanted to know too. Turns out it’s

a slimy surface layer of bacteria

that you may have already noticed forming on your trust H2O bottle.

What is the brown stuff in my water bottle?


Stachybotrys chartarum, or black mold

, is one of the most toxic mold species. And, if you aren’t cleaning your reusable water bottle properly, it is one of the culprits who might be living in there.

When should I replace my reusable water bottle?


If it scratches deeply, cracks, or warps from being frozen or heated

, it’s time to get rid of it. You also have to be careful when using your reusable water bottle, as dropping it can cause it to crack. Don’t try to keep using your bottle if it’s cracked or otherwise damaged.

Why do you need to wash water bottles everyday?


Bacteria and germs thrive in moist environments so not washing your water bottle enough provides the perfect conditions for germs to grow

. So the next time you are thinking of just giving your bottle a quick rinse, reach for the washing up liquid as well.

Are straw water bottles hygienic?

Straw-top bottles came out the cleanest, containing a tiny 25 CFU/sq cm. But

if you do own and use one of these, don’t get too smug

: “That is only 2 CFU/sq cm less than the average home toilet seat.”

Leah Jackson
Author
Leah Jackson
Leah is a relationship coach with over 10 years of experience working with couples and individuals to improve their relationships. She holds a degree in psychology and has trained with leading relationship experts such as John Gottman and Esther Perel. Leah is passionate about helping people build strong, healthy relationships and providing practical advice to overcome common relationship challenges.