The Clean and Pure Water filtration system does not “soften” your water. Most people buy water softeners to reduce scaling on appliances and pipes caused by calcium in the water. With a water softener, the calcium ions are swapped with sodium ions because sodium doesn’t build up on pipes. When water passes through the Water filtration system it changes the molecular structure of the calcium so that it is not as “sticky” and could reduce the amount of scaling you experience. Our water filtration systems do not replace a water softener if one is required due to hard water. For hard water solutions our CP WS 3000, salt free water softener is the preferred solution.