How important is soften water? I have a water softening system that has been out of service for about 8 years. The two cylinders need to be recharged with new media/beads. My city water is at 3 grains. Is it worth getting my soft water system back online or is it fine using 3 grains of hardness? Will I save money using soften water after I recharge the cylinders and have to purchase salt all the time. I read some where having soften water will save chemical costs by 30%? Is 3 grains considered hard?