Is it true that water never disappears or deteriorates, and the expiration date on a bottle is the period when it begins to decompose, releasing harmful substances into the water?

Is it true that water never disappears or deteriorates, and the expiration date on a bottle is the period when it begins to decompose, releasing harmful substances into the water?

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answers (5)

Answer 1
January, 2021

I often forget water in bytylki and bottles, I have never noticed foreign smells, water from a well, ch. forty meters. Sometimes water costs more than a year. Just on the floor. In my opinion, there are no identical sources, and if I try the water from the neighbors, then it seems to me immediately alien.

Answer 2
January, 2021

Water blooms. This is the only thing that can happen to her.
As a last resort, you can boil or use an army tablet for cleaning.
I do not like it - rain drink. In the forest of the middle zone, there are options for water extraction.
The whole article seems to hint at survival conditions somewhere in the wilderness or desert.

Answer 3
January, 2021

My answer is completely different from others.

"Is it true that water never disappears or deteriorates, and the expiration date on a bottle is the period when it begins to decompose, releasing harmful substances into the water? "

Chuvachok, learn to express your thought correctly.

When you write" she ", it is not entirely clear what you mean for many (and for me in the first reading) who reads this question, it seems that by "she" you mean "water".

That is, everyone thinks that you think that water, evaporating, releases harmful substances.

To avoid such a logical error in the future, change the word "she" to "last" or "bottle":

"Is it true that water never disappears or deteriorates, and the expiration date on the bottle is this is the time when the latter will begin to decompose, releasing harmful substances into the water? "

Now the question is clear for everyone who has read it.

Ps The problem of not being able to correctly formulate the question is the main problem on TQ.

P.p.s. Yes, it is, the plastic from which standard bottles are made decomposes in direct sunlight and has harmful fumes.

Answer 4
January, 2021

If you follow the storage conditions, that is, "do not expose to direct sunlight" and "store at temperatures from 5 to 20 degrees Celsius" (different manufacturers have different ways), plastic does not put anything into the water. The bottle releases substances into water slowly and gradually, and the higher the temperature, the faster this happens. So it would be more correct to say that it does not "begin to decompose," but "concentration reaches the limits when drinking is not recommended." As a rule, all these substances are not very harmful, the same bisphenol A, which they scare us with, has LD rat oral 4 GRAMM per kilogram of weight, these are absolutely horse doses, even if you eat a whole one and a half, you cannot get that much.

The fact is that all products must have a shelf life, so manufacturers put a deadline at the moment when the water just starts to smell a little unpleasant, but it is not necessary to be harmful so that they are not sued for a change in taste. In addition, there is an even more compelling reason: food grade plastic is not 100% airtight, so the problem is not so much what it releases, but what it can pass through itself (mainly gases with small molecules). There is also an opinion that it is simply beneficial for manufacturers that you buy a new container, but when the shelf life of one or two years is indicated on the bottle, it is somehow hard to believe.

Water really cannot deteriorate, just if organic matter is present in it, bacteria consume it, multiply, and can emit other substances and gases with an unpleasant odor. As a rule, if the water is not directly cloudy and overgrown with algae, it is not particularly harmful, but I would still not recommend drinking it. The shelf life before opening is always indicated on the bottle cap (it is this long), after opening it is usually much shorter, because it is inevitably clogged with organic matter and bacteria. Accordingly, the cleaner the water, the longer its shelf life. Bottles can be used an unlimited number of times, unless the water in them needs to be changed and the bottles themselves washed.

You can buy special dense bottles for many liters (usually from 10), they, firstly, are specially made for long-term storage from thick plastic and do not let anything through from the outside, and secondly, they have a smaller surface area ratio to the volume of water, that is, in order to achieve the same concentration of harmful substances, such bottles need to stand longer. Can be stored in glass (I personally go with water in a glass bottle), it seems to be safe enough to store for decades.

Answer 5
January, 2021

Water cannot decompose. And it does not deteriorate in a hermetically sealed container within the guaranteed shelf life indicated on the label, and if stored correctly.
Damage can occur for reasons:
1. Incorrect storage - in the sun, near heating appliances;
2 Depressurization of the package - a crookedly set cap on a bottle or improper sealing, for example.
3. In case of improper quality of containers and closures, the so-called primary packaging, i.e. those materials that come into contact with water / drink.
4. In case of violation of the production process technology.
Manufacturers who value their reputation, control the quality of the materials used, and also control the entire production process, so that the water is produced in compliance with all standards, and the tightness of the packaging is not violated during production.

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