Hard water stains appear as chalky white residue that results from buildup of excess minerals present in hard water. You might have noticed these unsightly hard water stains building up on your shower doors, faucets, showerheads, and other places where water is used throughout your home.
No matter how much you clean, if you find white or cloudy-looking spots on your glasses and shower, chances are you have hard water which is leaving behind mineral deposits. These hard water stains not only leave behind unsightly residue but they can also slow and eventually clog drains.