First, you need to know how much sodium is in the drinking water. A softener adds 7.85 mg/l, roughly a quart, per grain per gallons of compensated hardness.
I.E. hardness of say 15 gpg plus 1 ppm of iron = compensated hardness of 19 gpg * 7.85 = 149.15 mg per quart. Now that seems to be a high number until we look at other sources of sodium by checking food labels.
A slice of white bread usually has between 120-160 mg per slice. An 8 0z glass of glass of skim milk, 530+/-. V8 juice per glass, 560 mg. Snack food sodium content is TERRIBLE.
So someone concerned or worried about sodium uptake should read labels and actually learn how much sodium they get compared to drinking a quart of their softened water. And then adjust accordingly instead of buying an RO etc. to reduce the softened water sodium content. Donchya think?
BTW, most all waters contain some sodium. And all chlorides, salt is sodium chloride, goes right through a water softener to drain, none is added to the treated water.
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Gary Slusser
22 yrs in water treatment and well pumps, 13 yrs helping people on the 'net to help themselves.
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