The easiest way to recognize the presence of hard water chemicals in water is the spotting or scaling left behind on faucets, glassware and counter tops when water dries. This is due to the minerals in the water being left behind as the water evaporates. On your dishes, this is just an inconvenience; the same process can have a much more damaging effect on your fixtures, clothing, appliances and your plumbing system. The most effective solution for hard water staining and scaling is to reduce calcium and magnesium from the water, making it “soft”, using the “ion exchange” method. The hard water goes through a tank filled with beads made from a special resin. These beads have a negative electrical charge. The calcium and magnesium molecules, called “ions”, have a positive charge. The positively charged “hard water” mineral ions stick to the resin beads and are replaced with either sodium or potassium. The water leaving the tank is now “soft”. see Water Softener Page. A water softener system is commonly connected to the water line as it enters the home to provide a whole house solution to all points of use.