Why do airports confiscate water bottles?

The size of the container precludes enough of a potentially explosive liquid from being carried on board. If you really want to get that bottled water past the security checkpoint, there is a workaround: Just freeze it.



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Why Water is Prohibited? The reason why water is not allowed through airport security is that there are some explosive chemical liquids such as nitroglycerine, that are indistinguishable from water when looked at.

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Liquids such as water, soda, shower gels and so on automatically get tossed out. The TSA has no way of knowing whether or not the products have been tampered with, so it has no choice but to throw them away. Some items end up being sold.

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Shop The Article. In short, you are allowed to bring a reusable water bottle through the TSA checkpoint of an airplane, no matter the material, as long as it is empty. Once your empty bottle has gone through security, you can fill it up at a refilling station and bring your full water bottle onto the plane.

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According to the TSA, limiting containers to what can fit inside a quart-size bag prevents what former TSA administrator Kip Hawley once called a “critical diameter” to blow anything up. The size of the container precludes enough of a potentially explosive liquid from being carried on board.

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The TSA has no problem with travelers bringing stainless steel water bottles through airport security. The water bottle should be empty and placed in your carry-on bag when you go through the security checkpoint.

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TSA makes every effort to reunite passengers with items left behind at the airport checkpoint. Lost and found items retained by TSA for a minimum of thirty (30) days, and if not claimed, are either destroyed, turned over to a state agency for surplus property, or sold by TSA as excess property.

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Yes, as long as it is contained within the quart-sized bag, it's also important to note that these bags will be screened separately from your other items when going past security. If containers are larger than 3.4 ounces (100 ml), they won't be allowed through security, and the security officer will discard them.

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Because the TSA considers the nut spread a liquid, plane passengers must limit the amount they bring in their carry-ons. Like all other liquids, passengers are limited to 3.4 oz or less of peanut butter in their carry-on bag, but can also put the snack in their checked baggage.

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Tip #2: Reduce waste and save some money by bringing a reusable water bottle. So you can't bring H20 or any other liquids more than 3.4 oz. (well there are some exceptions) through security, but you CAN bring an empty bottle. Just fill it up on your way to boarding your flight after screening.

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You are allowed to bring a quart-sized bag of liquids, aerosols, gels, creams and pastes through the checkpoint. These are limited to 3.4 ounces (100 milliliters) or less per item. This is also known as the 3-1-1 liquids rule.

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What do a chainsaw, bear spray, and a meth burrito all have in common? They were all seized at United States airports last year, according to the Transportation Security Administration (TSA), which recently released its top confiscated items for 2021.

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Check out 2022's most confiscated items below.
  • Fentanyl candy wrappers found at LAX airport (Los Angeles International Airport)
  • Gun inside of a raw chicken at FLL airport (Fort Lauderdale-Hollywood International Airport)
  • Handgun found inside jars of peanut butter at JFK airport (John F.


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Yes, you may pack food in your carry-on or checked bag, but remember all food must undergo x-ray screening. Foods that are liquids, gels, or aerosols must comply with the 3-1-1 liquids rule. TSA officers make the final decision on whether certain items are permitted into the secured areas of the airport.

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Yes, you can bring your reusable stainless steel water bottle with you on an airplane. Nowhere on the TSA website does it specify certain water bottle materials that cannot board the plane. As long as your stainless steel bottle was empty when it went through the security checkpoint, you should be good to go.

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Use of transparent bags is intended to speed up the process of getting everyone through security, while still ensuring that liquids can be identified and checked if the security staff decide to.

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