Hard water is a type of water that contains high levels of minerals, such as calcium and magnesium. It is often found in areas with limestone or chalk bedrock. ICE, HAIL, and SLEET are all forms of precipitation that can be made from hard water. ICE is frozen water droplets that form when temperatures drop below freezing. HAIL is a form of solid precipitation that is made up of balls or irregular lumps of ICE. SLEET is a type of precipitation that is made up of small ICE pellets that form when rain droplets freeze as they fall through cold air.