FROM HARD TO SOFT

Pros and cons
Here are some advantages and disadvantages of softening water as seen by the North Dakota State University Extension Service, which did a major study on the subject.
ADVANTAGES
Cleaner, softer-feeling clothes.Longer life of appliances, including washing machine, dishwasher and water heater.Less use of household cleaning products, such as detergents, as well as personal cleanliness products, like shampoo.Reduction of water spotting.
This all sounds great and, indeed, it is. But you'll find some disadvantages.
DISADVANTAGES
Softened water is not recommended for house plants, lawns and gardens because of sodium content.Water used in recharging a water softener may overload or reduce the effectiveness of small septic or sewer systems.There may be health risks from sodium intake.Softened water is not recommended for steam irons or evaporative coolers. The best choice for such appliances is distilled water or water from a reverse osmosis unit.