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[quote=Anonymous][quote=Anonymous]Beware!  A relative died of kidney failure.  They drank the softened water not realizing sodium was added to it. [/quote]

The softener “exchanges” about an equal amount of sodium for the initial hardness. The harder the water, the more sodium you'll have added to the final product.

Although this is actually a rather complicated math problem, it can be simplified to the following:

Grains per gallon (GPG) of total hardness x 1.89 = mg. of sodium (NA) in an 8 oz glass of water.

Even simpler:

GPG hardness x 2 = mg. of sodium in an 8 oz glass of water, more or less.

In other words, if your water test tells you that you have 18 grains per gallon hardness, installing a water softener will add about 35 milligrams of sodium to each 8 oz. glass of water you drink.

[b]To put this in perspective, a tablespoon of catsup has 204 mg. of sodium and a slice of whole wheat bread has 211.[/b]

If your water already has 30 mg/L (milligrams per liter), you'll have to add that to what the softener puts in. An 8-oz glass is about 1/4 of a liter, so your total natural sodium for the 18-grain example above would be about 8 ppm. Add to that the amount added by the softener, and you'll have a general idea of the amount of sodium you'll be consuming from your drinking water.[/quote]

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