Why does drinking water have an expiration date?

Answer 1

Because water goes stale too. If it sits for a long time in a bottle it will be stagnant. Wouldn't you want to drink fresh clean water? It's the same as any other drink really, you should drink it soon after opening it.

Answer 2

Because the whole industry of bottling water for sale is flawed. The FDA attempts to standardize and regulate it. Many people believe that just because it comes in a bottle, it is pure and bacteria free. Not true.
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It should not automatically be assumed to be purer or safer than most tap water.http://www.nrdc.org/water/drinking/bw/chap1.asp

Answer 3

it will get a distilled taste after awhile and be nasty tasting-thats really all its about i mean when we had a drought back in kansas and the pipes broke we drank bottled water that ws like expired about 6 months ago (at that time) its been at least 7 years from then and were just fine

Answer 4

Two reasons, bacteria might be present and the the soft plastic material eventually leaches into the water causing death. Just kidding, it only leaches a estrogen like chemical that is well known as a "saltpeater" like chemical.

Answer 5

Clear plastic bottles are made from low density polyethylenes (LDPEs) and UV rays, such as sunlight, cause these to break down.

Any Trojan knows this :-)

Answer 6

I think it has to do with a couple of things - required to have a date and the "breakdown" of the material it is contained in.

Answer 7

No idea. Try getting a brita water filter then you can have great water all the time

Answer 8

it has one beccuase bactiria gets into it and it can make you sick haha .
and it starts to taste yukky .
=]

Answer 9

Its a requirment for any shelf item....truth

Answer 10

because it might start to grow algae