The white chalky residue from water is limescale buildup caused by high hard water mineral deposits, mostly calcium which you can remove from the steps mentioned here., So what is that white residue, and why won’t it go away? Let’s break down what’s happening, how to remove it without harsh chemicals, and how to stop it from taking over your fixtures in the future., Discover what causes white residue on faucets, its impact, and effective removal methods. Learn how to keep faucets clean and functioning., While not harmful to your health, white residue may be bad news for your appliances.but, there are easy fixes. The white stuff you see is the result of minerals carried through your tap water. Higher amounts of mineral deposits usually signify higher levels of water hardness., We’ll explore the science behind hard water and white residue formation. We’ll also provide practical home cleaning hacks to remove and prevent these hard water stains., Whatever you call it, it’s that stubborn white crusty GUNK that builds up around your faucets, shower head, and toilet. These obnoxious hard water deposits form when tap water evaporates, leaving behind minerals such as calcium and magnesium that solidify into the crusty stuff you can never seem to get rid of!.