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| Types and Treatment of Bottled
Water |
Did you know that there are at least a dozen
different types of bottled water available?
Bottled water products are normally categorized according to
the source of the water and the method(s) used by the bottler
to treat it. Bottled water products are generally required to
undergo disinfection. Bottlers who obtain water from a source
which has not previously been disinfected, such as a spring
or well, will usually use ozone or ultraviolet technologies
to disinfect the water, as these processes do not normally leave
a residual taste or odor in the water, like chlorine does. Bottled
water companies can also purchase their source water from an
approved potable water source, such as a municipal water supply.
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Some bottling companies choose to further treat
their bottled water products, using treatment processes such as filtration,
reverse osmosis, or distillation. Although federal laws do not require
the bottler to list any naturally occurring compounds on the product label,
such as sulfates, sodium, or radon, if a bottler chooses to add any ingredients
to the water, such as minerals, fluoride, or flavorings, this must be
stated on the label. Any naturally occurring or added ingredients cannot
exceed the maximum levels permitted by the applicable FDA or state regulations.
The FDA has established "Standards of Identity" for bottled water products
sold in the U.S. Some of the more common types of bottled water are listed
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Artesian Water
This is water that originates from a confined aquifer that has been
tapped and in which the water level stands at some height above
the top of the aquifer.
Fluoridated
This type of water contains fluoride added within the limitations
established in the FDA Code of Federal Regulations. This category
includes water classified as "For Infants" or "Nursery."
Ground Water
This type of water is from an underground source that is under a
pressure equal to or greater than atmospheric pressure.
Mineral Water
Mineral water contains at least 250 parts per million total dissolved
solids (TDS). It comes from a source tapped at one or more bore
holes or spring, and originates from a geologically and physically
protected underground water source. No minerals may be added to
this water.
Purified Water
This type of water has been produced by distillation, deionization,
reverse osmosis, or other suitable processes. Purified water may
also be referred to as "demineralized water." It meets the definition
of "purified water" in the United States Pharmacopoeia.
Sparkling Water
Sparkling water contains the same amount of carbon dioxide that
it had at emergence from the source. The carbon dioxide may be removed
and replenished after treatment.
Spring Water
This type of water comes from an underground formation from which
water flows naturally to the Earth's surface.
Sterile Water
This type of water meets the requirements under "sterility tests"
in the United States Pharmacopoeia.
Well Water
Well water is taken from a hole tapping, etc. This hole may be bored,
drilled, or otherwise constructed in the ground.
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