Water softeners essentially balance out minerals in the water by deionizing “hard minerals” like calcium and magnesium and adding sodium and potassium (NaCl and KCl). The physical process occurs through an ion-exchange resin which filters through the salts for soft water quality that will leave the surface of a car spotless! As softened water will leave the surface effortlessly smooth to the touch, this system is perfect for the final rinse in any car wash servicing business. (Think of it like rough paper towel versus a tissue. The differences in the effects they have on a surface are drastically incomparable.) Keep in mind that this process does not completely remove all dissolved solids like organic molecules, viruses or bacteria. Therefore, this treatment is recommended for the purpose of softening instead of filtration.