The best way to prevent limescale is to have soft water. This means you must either move to a soft water area like Scotland or treat your hard water. It is better to PREVENT Limescale from forming than to remove it. The best option is to treat the water as it enters your premises either with a water softener or good quality water conditioner like Little Plumber. When the water has been treated, the limescale will not form furthermore old limescale will be removed.