Hard water:Hard water is water that contains high levels of dissolved minerals, such as calcium and magnesium. These minerals can cause a variety of problems, such as making it difficult to get soap to lather, leaving behind mineral deposits on fixtures and clothing, and clogging pipes. Hard water is a common problem in many parts of the world, but there are a few ways to mitigate its effects. One is to install a water softener, which removes the minerals from the water. Another is to use special soaps and detergents that are designed for hard water. Finally, some people simply choose to live with the effects of hard water, as it is not generally considered harmful to human health.