You may be asking, “What is Water Hardness?” Check out this explanation of water hardness from Fairfax County, VA Water Authority.
Many industrial and domestic water users are concerned about the hardness of their water. Hard water requires more soap and synthetic detergents for home laundry and washing, and contributes to scaling in boilers and industrial equipment. Hardness is caused by compounds of calcium and magnesium, and by a variety of other metals. Water is an excellent solvent and readily dissolves minerals it comes in contact with. As water moves through soil and rock, it dissolves very small amounts of minerals and holds them in solution. Calcium and magnesium dissolved in water are the two most common minerals that make water “hard.”
I have experienced this hardness first hand with my humidifier and dish washer. Have you noticed a white film in your dish washer or calcium deposits in a water line or pipe? It can be a huge issue. If you are finding that your water is leading a white film and you are seeing spots on your glasses, it might be time to look at your water quality and check out the water hardness as one part of that total water quality picture.