What is Hard Water...and...Why Should I Care?
Hard water is simply water that contains dissolved minerals such as calcium and magnesium. The higher the percentage of dissolved minerals in a given volume of water, the "harder" the water will be. Water hardness in our local Arizona water supply is significant and can cause a Metro Phoenix Area homeowner serious problems.
The dissolved minerals in hard water prevent soaps and detergents from foaming up thereby reducing their ability to clean.
Hard water left untreated on glass surfaces will quickly form "hard water scale" deposits that grow larger, thicker, and more difficult to remove over time.