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Bottled
water is not necessarily safer than your tap water. EPA sets standards for tap
water provided by public water systems!
" BOTTLED WATER: POURING RESOURCES DOWN THE DRAIN"
The Food and Drug
Administration sets bottled water standards based on EPA's tap water standards.
Bottled water and tap water are both safe to drink if they meet these standards,
although people with severely compromised immune systems and children may have
special needs. Some bottled water is treated more than tap water, while some is
treated less or not treated at all. Bottled water costs much more than tap water
on a per gallon basis. Bottled water is valuable in emergency situations (such
as floods and earthquakes), and high quality bottled water may be a desirable
option for people with weakened immune systems. Consumers who choose to purchase
bottled water should carefully read its label to understand what they are
buying, whether it is a better taste, or a certain method of treatment.
Bottled water is rapidly becoming the choice for drinking water. It has
practically become the icon for healthy beverages. There are approximately 475
bottled water plants in the U.S., producing 600 brands of bottled water. It is
estimated that one in six American households use bottled water as either the
primary or only source of water. In California alone, residents consume over
33% of the bottled water that is sold.
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Is Bottled Water Healthier
Than Tap Water? |
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One contributing
factor to the popularity of bottled water is that people commonly believe
that bottled water is
"healthier" than tap water. Calcium (Ca) and magnesium (Mg), in
particular, are important minerals we would want in our water. Death rates
tend to be lower in areas with tap water containing higher levels of Ca
and Mg. It has been shown that deficiencies in magnesium are capable of
producing heart disturbances, including 215,000 fatal heart attacks in the U.S. each year,
and as many as 20,000,000 fatal heart attacks worldwide!
However, sources
say that few brands of bottled water
offer a significant amount of minerals.
Below is a comparison
of calcium and magnesium in bottled and tap water in a few major cities.
The numbers
represented in this table are the percentages of FDA recommended daily
intake per liter for adults.
|
Bottled
Water Company |
%Ca |
%Mg |
Tap
Water |
%Ca |
%Mg |
|
Crystal Geyser |
1 |
1 |
San Diego |
9 |
6 |
|
Evian |
8 |
6 |
L.A. |
4 |
4 |
|
La Croix |
6 |
6 |
Houston |
4 |
1 |
|
Perrier |
9 |
1 |
Chicago |
4 |
3 |
|
San Pellegrino |
20 |
14 |
New York |
1 |
0.4 |
|
Volvic |
1 |
2 |
Detroit |
3 |
2 |
Sources:
FDA; city water department; bottled water companies.
From these figures, it
can be concluded that bottled and tap water can be equally "healthy" in
terms of calcium and magnesium content, depending on where you live. |
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Different Types of Bottled
Water |
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Mineral Water
is drawn from an
underground source and contains at least 250 ppm of dissolved
salts. Whichever minerals are present are what make mineral water what it
is. Some minerals that may appear in mineral water include calcium,
iron, and sodium. |
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Still
Water
Still water is
water without the "fizz" caused by gas bubbles. Ordinary tap water and
bottled water in larger containers are examples of still water. |
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Sparkling Water
is water which is
carbonated (contains CO2, producing the "fizz"). It can either be
naturally carbonated or mechanically carbonated in a process where CO2 is
added to normal tap water. |
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Seltzer Water
is tap water that
has been filtered and carbonated. Club soda is seltzer water with added
mineral salts. |
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Sterilized Water
is used to make
baby formula and is also drunk by people with immuno-compromised systems.
It must be processed to meet FDA’s requirements for commercial sterility. |
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Distilled or De-Mineralized
is usually tap
water that has been treated to remove nearly all minerals and sodium that
occur naturally in water. |
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Purified Water
Purified or reverse osmosis water is free of dissolved minerals and,
because of this, has the special property of being able to actively absorb
toxic substances from the body and eliminate them. Studies validate the
benefits of drinking purified water when one is seeking to cleanse or
detoxify the system for short periods of time (a few weeks at a time).
Fasting using purified water can be dangerous because of the rapid loss of
electrolytes (sodium, potassium, chloride) and trace minerals like
magnesium, deficiencies of which can cause heart beat irregularities and
high blood pressure. Cooking foods in purified water pulls the minerals
out of them and lowers their nutrient value.
According to the
U.S. Environmental Protection Agency, "Purified" water, being essentially
mineral-free, is very aggressive, in that it tends to dissolve substances
with which it is in contact. Notably, carbon dioxide from the air is
rapidly absorbed, making the water acidic and even more aggressive. The
more purified water a person drinks, the higher the body acidity becomes. |
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Key Diffenernces of FDA and
EPA Rules for Tap vs Bottled Water |
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|
Water Type |
Disinfection
Required? |
Confirmed
E. Coli
& Fecal Coliform
Banned? |
Testing
Frequency for Bacteria |
Must Filter to
Remove Pathogens, or Have Strictly Protected Source?
|
Testing
Frequency for Most Synthetic Organic Chemicals |
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Bottled Water |
No |
No |
1/week |
No |
1/year |
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Carbonated or
Seltzer Water |
No |
No |
None |
No |
None |
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Big City Tap
Water (using surface water) |
Yes |
Yes |
Hundreds/ month |
Yes |
1/quarter
(limited waivers available if clean source) |
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Is Bottled Water Safe?
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The Natural
Resource Defense Coucnil (NRDC) conducted a four-year review of the
bottled water industry and the safety standards that govern it, including
a comparison of national bottled water rules with national tap water
rules, and independent testing of over 1,000 bottles of water. The
conclusion is that there is no assurance that just because water comes out
of a bottle it is any cleaner or safer than water from the tap. And in
fact, an estimated 25 percent or more of
bottled water is really just tap
water in a bottle -- sometimes further treated,
sometimes not.
Most bottled
water appears to be safe. Of the bottles tested by the NRDC, the majority
proved to be high quality and relatively free of contaminants. The quality
of some brands was spotty, however, and such products may pose a health
risk, primarily for people with weakened immune systems (such as the frail
elderly, some infants, transplant and cancer patients, or people with
HIV/AIDS). About 22 percent of the brands tested by the NRDC contained, in
at least one sample, chemical contaminants at levels above strict state
health limits. If consumed over a long period of time,
some of these contaminants could cause
cancer or other health problems. |
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