Water is called "hard water" if it contains excessive amounts of certain minerals, particularly calcium and magnesium, because these substances leave a hard scale on surfaces that come in contact with the water. You can tell you have hard water if there's build-up on your sinks and bathtubs, or if you have to use large amounts of soap to clean dishes or wash your hair.
True to its name, hard water can hit you—and your pocket—hard. It works against you in most indoor uses, such as bathing, washing dishes, and shaving.
Hard water can clog plumbing in appliances, cutting down on efficiency and hiking up energy and maintenance bills.
Treated water means less housework:
A Culligan water softener removes the materials that make your water hard and causes scaly buildup on utensils, porcelain...even your skin! Advanced features help you save money by using less salt, water, and electricity. Easier living with softer water: