According to the US Geological Survey, 85% of homes in this country have some degree of hard water. Arizona is no exception, due to the composition of the soil. Hard water can be frustrating, especially for those who do not have experience with it. Despite the challenges hard water can create, including mineral build-up and water heater failure, with the right knowledge it’s easy for anyone to tackle the problem head on. Here’s a guide to help you understand what hard water is, how it can be identified, and what you can do about it.