Are water softeners safe for my health?

The latest research shows that the water filtered through the water softeners can be safely consumed.

In areas where water is very "hard" water should not be used for food preparation for children and infants, due to high concentrations of potassium and sodium ions which results from conversion of calcium and magnesium ions (during softening). 

Recommended dose of sodium ions in the water should not exceed 200 mg/l.