How much salt does my Water Softener add to my drinking water?

For every grain of hardness in your water 7.5 mg of Sodium will be “added” to each quart of water by the ion-exchange method. For example if the water is 10gpg hard, you will add 75.0mg of Sodium per quart of water softened by ion-exchange. To put this in perspective one 8oz glass of milk contains 120mg of Sodium; one slice of white bread contains 114mg of Sodium. There is more Sodium in an 8 ounce glass of milk than in one quart of water softened by ion-exchange. And there you go!

FloridaSoftWater.com