Nuvo H2O Dphb-a Home Water Softener System, 5 X 24" - New Model - No More Hard Water by Using Revolutionary Technology! The NuvoH2O Home Softener System uses a revolutionary technology to lower the pH level of water based on the basic scientific process of chelation in which the mineral ions causing hard water, principally calcium and magnesium, are bound to the chelating agent in NuvoH2O's FDA-approved, proprietary formulation, which keeps the minerals soluble and unable to cause hard water problems. Prevents scale build-up and removes existing hard water scale FDA & NSF approved / For homes with 1  2 residents Extends the life of your water heater, plumbing fixtures and appliances Eco-friendly  no salt, no waste water, no electricity