Brian,
I see that you are as misinformed as previously but now with many misleading sources to support your errors.
Here's a tip. Going to a salt company to to ask about their products is not the best way to get objective information about salt and related products. They are not likely to give you the most accurate information.
That being said, Cargill did not lie on their website. But you did not ask the right question. No one ever said that salt water softeners put "salt" in your water. The process used by all salt water softeners is known technically as "ion exchange."
What this means is that a salt softener has resin beads which are charged or coated with salt (usually sodium chloride). As water moves through these resin beads they remove the calcium and magnesium from the water. Since removing calcium and magnesium from your water would make it very acidic (reduce its pH) those minerals are replaced with twice as much sodium. This keeps the mineral level up and balances the water's acidity or pH.
"Salt" is not added to your water. No one ever said it was. But plenty of sodium is added to your water. Therein lies the problem.
You might want to check a bit more reliable a website about how things work. Try
http://home.howstuffworks.com/question99.htm to understand how a water softener works. Or you might want to read Dr. Cass Ingram's bestselling book HOW TO EAT RIGHT TO LIVE LONGER. He has a chapter on water and includes an accurate description of how a salt softener works. Another website which includes accurate information is from the Minnesota Real Estate Update (Minnesota has very hard water in general):
www.netscape.com/viewstory/2007/04/06/how-does-a-home-water-softener-work/?url=http%3A%2F%2Fmnrealestateupdate.blogspot.com%2F2007%2F03%2Fhow-
does-water-softener-work.html&frame=true.
Since you are partial to the Water Quality Association, see its explanation of how a water softener works: "A typical water softener works on the principal of "cation exchange," in which the ions of hardness minerals (an ion is an electrically charged atom or group of atoms) like calcium and magnesium are exchanged for sodium ions, effectively reducing the concentration of hardness minerals to insignificant levels. As the water enters the softener, it passes over a resin bed in a special tank. The resin is made up of tiny beads . . . . These beads attract and hold sodium or potassium ions. The beads will exchange sodium or potassium for hardness ions such as magnesium or calcium whenever the hardness ions are encountered. . . . See the whole article at
http://wqa.org.
I am not quite sure what you mean when you write "Evedence (sic) is not fact." regarding RO water. If evidence isn't fact what is?
To argue that RO water is aggressive, corrosive and can actually eat holes in metal like copper pipe, but that it is not acidic or potentially harmful for human consumption is simply ludicrous. Calling a rose a tree does not change the fact that a rose is a rose. Saying that RO water is not acidic (an assertion that is easily disproved by doing a simple pH test from kits that are available from most hardware stores) is simply factually wrong.
But to argue that "Reverse Osmosis-treated water is aggressive to metallic pipe or to substances that can ionize and dissolve in water—not because of low pH (acidity), but because it is highly pure and has few dissolved substances in it." and conclude therefore that it is ideal for human consumption is simple nonsense.
Water is not that hard to understand. Common sense is all that most people need to separate the nonsense: "Salt softened and reverse osmosis water is good" from the bad: "Hard water is bad." The facts clearly show the opposite.
The idea that reverse osmosis water that is corrosive to metal is NOT potentially harmful is simply ridiculous. The World Health Organization (WHO) recently released an extensive report on the dangers of salt softened and reverse osmosis water (both of which they grouped as "demineralized" water).
An excerpt from the World Health Organization's Rolling Revision (August 2004) “Rolling Revision of the WHO Guidelines for Drinking Water Quality” reads:
“The group concluded that there is sufficient epidemiological evidence of an inverse relationship between calcium and magnesium concentrations in drinking water and ischemic heart disease mortality, and that consumption of water containing calcium and magnesium, and therefore also the reintroduction of Mg and Ca into demineralized water in the remineralization process would likely provide health benefits in those consumer populations. There are no known harmful human health effects associated with the addition of calcium and magnesium within a large range and the nutritional benefits are well known. In addition, limited but suggestive evidence exists for benefits associated with other diseases (stroke, renal stone formation, cognitive impairment in elderly, very low birth weight, bone fractures among children, pregnancy complications, hypertension, and possibly some cancers). Adding calcium and magnesium to the demineralized water would be a relatively inexpensive preventive intervention that does not require individual behavioural change, and it is already done as part of many water treatment processes. The intervention could not only provide health benefits but also help reduce medical care costs.”
Contrary to your assertion, demineralized water IS bad for you. The evidence is clear and compelling. While you claim that you are simply looking for facts on which to base decisions, it seems much more likely that you already reached a conclusion and have done your best to justify it.
Finally a good independent website by a doctor who specializes in water is
www.healthywater.com, written by Dr. Martin Fox. Dr. Fox is the author of the water classic "Healthy Water for a Longer Life." All articles are heavily documented with sources from professional journals.
Read what Dr. Fox says about reverse osmosis or demineralized water under the title:"De- Mineralized Water: Reverse Osmosis (RO) and Distillers":
"De-mineralized water contains very little or no minerals. This is the type of water you get if you use a distiller, reverse osmosis (RO), or de-ionization.
"Creating a "healthy water" means removing the harmful agents but keeping the beneficial minerals. According to Dr. John Sorenson, a leading authority on mineral metabolism, 'Minerals in drinking water are more easily and better absorbed than minerals from food.'"
He includes pages of professional references.
You should also take a look at his comments titled:
"Bottled Waters: Are all Created Equal?"
"Bottled water is big business. And it usually tastes better than what comes out of the tap. But is it "healthy water?" It depends.
"Is it hard? Is it moderately high in TDS (total dissolved solids)? Most bottled waters in the United States do not give the information you need to know to answer the questions. Request a complete water analysis from the company or check their web site.
"Many bottled waters are processed water using distillation, reverse osmosis, de-ionization or filtration. Frankly you can do this yourself and save money.
"With over 700 brands of bottled water available in the US around 80% are processed water.
"Purchase only bottled natural spring or artesian well waters that come closest to the "healthy water" criteria – hardness 170 mg/l and TDS around 300 mg/l."
While you don't believe that skin absorption of sodium from softened water is a concern (contrary to the American Heart Association's position) I would suggest you reconsider. You are correct, people do in fact lose water from heat caused dehydration etc. However, they do not lose the sodium or other contaminant that they may already absorbed through their skin. And as I stated before, my primary objection to bathing in salt softened water was the slick, slimy, can't-get-the-darned soap off my skin feel. The fact is, salt softened water is not good for drinking, cooking, using on your plants (even salt softener companies tell you not to use softened water on flowers and plants) or bathing.
Bathing in filtered clean water is much to be preferred to bathing in sodium-saturated water.
And we have not even talked about the disastrous environmental aspects of both salt softened water and reverse osmosis. Many cities in California have banned salt softeners due to the tremendous pollution water they produce from the chloride waste generated from their regeneration cycle. And that doesn't even count the great water waste each time a system regenerates.
Every time the resin beads in the salt softener need to be recharged to produce more soft water (typically every couple days for a family of four) it generates a corrosive deadly salt brine waste that is flushed into the sewer system. That brine makes it very difficult and expensive for the water district to reclaim that water even for agricultural purposes.
Water is a diminishing resource throughout the world. Reverse osmosis units waste was much as 6 to 8 gallons for every one gallon produced for consumption. Many of the same states and cites that are moving to ban salt softeners due to their waste and pollution are now taking up potential bans on reverse osmosis.
Your devotion to a dangerous, outdated and environmentally damaging technology is understandable only in light of the great amount of misinformation that the salt based water softening industry uses to promote its products. But the very fact that you are obviously sharp enough to do research that clearly disproves all their claims belies your devotion to "facts."