How much sodium is added to the water by the softener?
That depends on the hardness of the original water. As a comparison, one slice of white bread has about 160 milligrams of sodium; 3/4 cup of canned baked beans = 1130 milligrams; 1 tablespoon of catsup = 204 milligrams; 1 medium frankfurter = 610 milligrams; and 1 cup of whole milk = 127 milligrams. Even a common Alka Seltzer tablet contains 532 milligrams of sodium. However, if you suffer from hypertension or are on a sodium-restricted diet, you should consider a Reverse Osmosis unit proper water for drinking.