There is so much to learn when it comes to using cloth diapers.  You have to become familiar with the different diapers and inserts, find the right technique that will keep your little one dry, and nail down the perfect wash routine.  All of which is simple to do. Many families wonder what to do if your water is hard. So what is hard water?  Hard water has high mineral content.  More than 85 percent of the country has hard water.  The mineral content in the water varies region-to-region and water source. Why does hard water cause problems with cloth diapers?