*Hard water is water that has high mineral content. Hard water is formed when water percolates through deposits of limestone, chalk or gypsum, which are largely made up of calcium and magnesium carbonates, bicarbonates and sulfates.
Hard water can damage your plumbing, dry your skin, stain sink/glassware, and cause other damages.
A water treatment system can significantly reduce hard water from your home water.
*According to Wikipedia
