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# Why do you have to drink bottled water in three days once open if its been filtering for thousands of years?

Updated: 9/13/2023

Wiki User

15y ago

The water in your bottle is no longer being purified. Once the seal on the lid is broken and the water is introduced to the air, it is also introduced to bacteria. Bottled water does not contain the chemicals that tap water is required to in order to keep it safe for a prolonged period of time.

Wiki User

15y ago

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Q: Why do you have to drink bottled water in three days once open if its been filtering for thousands of years?
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