How Long Can You Keep Water in a Stainless Steel Bottle?

How Long Can You Keep Water in a Stainless Steel Bottle?

Are you worried that the water in your bottle is not safe to drink anymore? How long can you keep water in a stainless steel bottle? If you are wondering if you can store your water in your bottle overnight, a week, or more than a month, you’ll find out in this article. 

How Long Can You Keep Water in a Stainless Steel Bottle?

You can keep your water in a stainless steel bottle for 1 day if you are using it daily. It is highly suggested that you wash your water bottle every day to prevent the overgrowth of bacteria and molds especially if you are bringing it outdoors. 

If you’re going to store the stainless steel bottle properly, the water inside can safely be consumed after a week. Week-old water is safe to drink as long as the bottle is clean and sealed properly, and stored in an area where there is no direct sunlight. Moreover, you can also store water in a tightly sealed stainless steel bottle for up to 6 months. 

A blue water bottle kept inside a wooden drawer

Why You Should Keep Water in a Stainless Steel Bottle

There are different kinds of water bottles in the market where you can keep your water for a day, for weeks, or for months. But why should you keep water in a stainless steel bottle? Here are several reasons why.


Plastic, glass, and aluminum water bottles do not offer any insulation. Glass and aluminum can hold water at a certain level of temperature. However, it cannot maintain your drink’s temperature for hours. Stainless steel bottles, such as the Hydro Cell, have a double wall and vacuum seal to keep your drinks at their right temperature for hours. 

Hydro Cell can keep your drinks hot for about 8 hours and cold for 24 hours. So if you are planning to go for a day-long trip, you may want to bring an insulated stainless steel bottle with you. 


When it comes to safety, there are just certain kinds of bottles that are considered safe. Some plastics contain harmful chemicals such as phthalates and bisphenol-A. These chemicals can leach into your water after so many times of use and when exposed to the sun.

BPA was banned in several countries because of the harmful effect it can pose to humans. Moreover, most stainless steel bottles are free from these chemicals which make them very safe for use. Stainless steel does not leach any chemicals on your water even if stored for longer periods of time.

Bacteria and Mold Resistance

Plastic bottles usually have crevices that allow bacteria to hide and grow if not washed properly and regularly. Stainless steel bottles will not easily have scratches where bacteria can hide and breed. Stainless steel bottles that are safe from bacteria and mold are also a good choice if you want to keep water in your bottle for a week or so.

A woman standing in the middle of a forest while holding a Hydro Cell water bottle


Though stainless steel bottles are made of metal, they are incredibly lightweight, even with water inside. This is because they are designed for indoor and outdoor use. If you are planning to go for a hike and you need to bring water with you, stainless steel would be a good choice of bottle.


Stainless steel bottles are 100% recyclable and sustainable. Compared to plastic, they will not last for millions of years before getting totally decomposed. Aside from getting recycled easily, stainless steel bottles can last for more than 12 years. In the long run, you’re not only helping the environment, but you are also saving a lot of money.

Eco-friendly water bottles are also known to be made of food-grade materials. It means that using this bottle will not put your health at risk.

Wide Size Range

The wide size range of a bottle will help you store or bring enough amount of water that you need. You can choose from 16 to 32 ounces for a standard-size bottle. You can also have bigger sizes from 40 to 64 ounces. 

Stainless steels also come with a standard or a wide mouth that can allow you to put some ice cubes easily if you need to.

Easy To Clean

You don’t want to waste your time cleaning your water bottle the whole day. Some stainless steel water bottles may not be dishwasher-safe, but they are stain-proof and easy to clean. Additionally, if your water bottle is made of high-quality steel, it will not easily smell and have dents and scratches.

Since water bottles are easy to wash and don’t retain any flavor, color, or smell from your previous drink, you can rest assured that the water that you will keep inside will stay fresh and cool. Moreover, you can also use the following methods to keep your bottle clean:

  • Soak with baking soda and water
  • Wash it with distilled vinegar
  • Use a very small amount of bleach mix with baking soda
  • Hydrogen peroxide may also help sanitize it


    A child wearing a blue shirt holding a stainless steel water bottle

    Related Questions

    Can I Get Sick From Drinking Old Water?

    You can get sick from drinking old water if it is stored improperly. An open container or water bottle can harbor so many kinds of bacteria, insects, and molds. It can also be filled with dust and other microscopic particles. These substances can cause diarrhea, vomiting, and other serious complications.

    Is It Okay to Drink Water Left Overnight?

    It is okay to drink water left overnight as long as it is sealed or closed properly. You can still drink water from a water bottle after a week if the bottle is clean and does not show any signs of mold build-up. However, the stock water in an open glass or bottle should not be consumed the next day.

    What Temperature Should Water Be Stored At?

    Water should be stored at room temperature or a little cooler. The area should not receive any direct sunlight as it can cause leaching to some water bottles. Store the water away from poisonous chemicals to avoid chemical reactions.


    If you are using your water bottle daily, you should change the water in it every day as well because germs coming from the air, your saliva, and the bottle itself can multiply very quickly. If you are just going to store the water, make sure that it is tightly closed and you can safely consume it for up to six months.

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