Why does bottled water have an expiration date? How can it expire?

Answer 1

bacteria grows if it is there to long.

Answer 2

good question. I thought of this when I was ten. I put water in a bottle and put it in long term storage to see what would happen to the water. How long water will look like water etc. It soon had some white dust and odd molecules floating in it. I dont know where it came from. I was sure I closed the lid tightly.. It may be because the water is tap water to begin with?

So I think no water can remain indefinitely in the shelves - at some point of time it would just become bad, unmarketable, not sellable, threat to consumer health.. So it contains a "MUST BE SOLD BEFORE THIS DATE:" label.

Anyway, bottled water sold in India does not even pass basic laboratory tests, so it really doesnt matter. Just look into the water for any foreign particles floating in it and if it loks and tastes drinkable take a risk and drink it - the Government needs to regulate the bottled water/drinking water industry instead of ordering what kind of vessel rail passengers need to use for drinking and eating - instead of controlling the food and water contracters who are selling it in the first place inside the rail carriage - HORRIBLE, to say the least. I have to kick Lalu in his ***.

Answer 3

I burst out laughing at the answer that there is no oxygen in water. Water is H2O, nothing but hydrogen and oxygen.

Bottled water isn't guaranteed to be sterile, and after time bactera will muitiply. And some materials used to make bottles can leach into the contents over time.

You should not even reuse smaller bottles unless they are thoroughly sanitized.

Answer 4

All water has microbes/bacteria that may taint the water in a certain amount of time. Dates accomplish two things- 1. It reduces liability to the company and 2. People look for dates on almost everything now and if it's not there they buy one that does.

Answer 5

it is bcoz that bottled water is not guarranteed n also to keep it fresh n heathy for us to drink, the factories add some chemicals to it, n latter on when the chemicals dont hae the power to keep the water safe for drinking, than that is when the water has expired. it is mostly esimated by the factories men.

Answer 6

Because the plastic which the bottle is made of reacts with the minerals in "Mineral water" and produces toxic substances with aging of bottled water

Answer 7

bcoz it contains various type of chemicals bcoz the water in that bottle is refinded so it contain expire date.

Answer 8

the plastic degrades over time allowing microbes to pass through into the water contaminating it

Answer 9

I think if u don't change the water it like grows mold in it or somin. Not Sure

Answer 10

It's just a commercial politics.

Answer 11

http://watersystemswarehouse.com/secrets.htm

Have alook into the above link, it with solved ur doublts.

RamaJeyam.R