1. In hard water areas, water softening plant may have been considered necessary. 2. The original uses for nanofiltration were water treatment and in particular water softening . 3. Water softening is usually achieved using lime softening or ion-exchange resins.4. I suppose I ought to invest in industrial grade water softening eqipment !" 5. The port receives lumber, salt for water softening , automobiles, and steel sheet and plate. 6. Szima later made a career in the water softening business. 7. Non-chemical devices are often used in place of traditional water softening for this application. 8. Elmer Works is labelled a water softening works on the 1935 Ordnance Survey map. 9. Water softening plants were installed at Helidon and Murphy's Creek, to soften water using lime.10. Most modern laundry detergents do not contain phosphates, but bring about water softening using zeolites.