Limescale is a white, chalky substance that forms when hard water evaporates and leaves behind calcium and magnesium deposits. It can build up on surfaces like sinks, fixtures, taps, shower screens, kettles, boilers, and pipework.
Limescale is made up of minerals from the ground, like calcium and magnesium, that are insoluble in water. Over time, limescale can damage appliances and plumbing fixtures.
Here are some ways to remove limescale:
  • Vinegar: Pour vinegar down your drain and let it sit overnight. The acidity of the vinegar will break down the calcium carbonate.
  • Lemon juice: Apply lemon juice directly to a cloth and scrub the limescale. You can also mix one part lemon juice to four parts water.
  • WD-40: Spray WD-40 on the limescale, wait a few minutes, then scrub it away.
You can also use a home water softener to reduce limescale buildup. If you already have limescale buildup, a citric acid water softener can help remove it without damaging your pipes or fixtures.
Limescale is not bad for your health because the minerals that cause it naturally occur in your drinking water.