Hard Water

In the water cycle calcium and magnesium leech to water as it runs over rocks and through soil this causes hard water which it's high mineral content in water. There are various ways to treat this but it all depends on what part of the country you live in. You might have hard water if you find light white stains in your dishes or cups, or if you constantly have to clean the surrounding of your water using appliances due to light white stains on it.