Hard Water
This is a generic term that means ground water has picked up minerals from the earth such as magnesium and chalky calcium. Water with high levels of calcium can clog pipes with mineral build up left behind as the water flows through the pipes.
Hard water also reduces the ability of soap to lather and the minerals form a sticky scum with the soap and prevent easy rinsing of anything being washed. This includes your hair, your car and your dishes and glasses with water spots. They all will have a white chalky scale or residue left behind with hard water.
