Why do water bottles have expiration dates?
In: Other
Plastic degrades and leeches into the water. Seals weaken and allow some contaminants to get in. The water is rarely fully distilled and so there is some minimal level of contamination to begin with that is fully safe for human consumption but that after being allowed to sit for X amount of time could have grown to not be safe. Many reasons. But the plastic degrading is the largest reason.
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