Cleaning the loo is a loathed enough chore as it is, but if you happen to live in London, the task is made tougher thanks to hard water.
Hard water occurs when rain, which falls as soft, filters down through the porous rock and picks up hitchhiking minerals like magnesium and calcium along the way. These impurities lead to a build-up of limescale in the bathroom and elsewhere in the home, from around taps and showers to inside washing machines, dishwashers and kettles.
