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Are there bacteria in bottled water?
Bacteria are found in most bottled waters sold for drinking purposes. Bottled water is usually disinfected to remove harmful organisms, but is not intended to sterilize the water. Usually, sterile water is reserved for pharmaceuticals.
Many studies have shown that the levels of bacteria increase quickly to maximum levels after six weeks of unrefrigerated shelf life. However, since disinfection (ultra-violet (UV) light, or ozonation) destroys the harmful organisms, this natural regrowth of harmless flora of the water is not considered to be a health hazard. Refrigeration is recommended after the water container is opened in case harmful bacteria are reintroduced at this time.
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Note from the Ocean Plasma Team: The above also applies to bottled ocean water.