“Hard Water” gets the name from being high in hard mineral content.
Water softeners are devices that remove hard minerals through a technique called ion exchange, where a small amount of sodium replaces the hard minerals in the water. The small amount of sodium left over is simply flushed out when you run your water.
The results of hard water are limescale build-up on plumbing fixtures, staining of sinks & tubs, lack of soap suds, and dingy laundry. Hard water can also reduce the efficiency and lifespan of water heaters, boilers, cooling towers and other water-related equipment.