I just bought a new house (with new appliances). The water in the city I live in has a water hardness of 10 gpg. Should I be concerned about this hardness? I drink purified water, so I am mostly concerned about damage to the plumbing/appliances. Is a water softener necessary?
Before we got a softener, our water was about the same level of hardness as yours. Same scenario, new home and all new appliances. Within a couple of months, there was noticeable white film around faucets and inside the dishwasher. Laundry did not come out clean. Glasses were spotted. Had to clean my drip coffee maker weekly or it stopped working. Draw your own conclusion. If you've just moved in, now's the time.