If water does not expire then why is the expiry date written on bottled water?

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You must have bought a water bottle many times till date. The expiry date is also written on the water bottle. But why is the expiry date written on the water bottle when the water is not perishable? Learn about it.

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Does water also expire?

Water is not perishable, but bottled water is regulated by the US Food and Drug Administration (FDA). Legally speaking, there is no requirement to write shelf life on bottled water. However, as a precaution, bottles are marked with an expiry date of up to two years from the manufacturing date, as the plastic can start to dissolve in bottled water after a period of time.

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Does water also expire?

According to the International Bottled Water Association (IBWA), some companies put the date lot code on water bottles. This helps in rotating the stock. These lot codes are also used to detect product recalls, water contamination and bottling errors.

IBWA says that these lot codes, written according to the date on the bottles, are not actually expiry dates. Rather people get to know which bottle they have to use first.

However, storing bottled water for a long time can pose a health hazard. This is because many water bottles still contain the chemical BPA, called bisphenol-A.