With the increase in water quality concerns homeowners continue to turn to reverse osmosis as a solution to their concerns. Reverse osmosis provides unparalleled consistency in delivering the highest quality water through its multi layered level of filtration, with the RO membrane filtering down to 1/10,000 of a micron. As this push for RO home filtration continues, there is also a growing trend to have some minerals added back in to the water, Additional Details ------------------------------ Product description: With the increase in water quality concerns homeowners continue to turn to reverse osmosis as a solution to their concerns. Reverse osmosis provides unparalleled consistency in delivering the highest quality water through its multi layered level of filtration, with the RO membrane filtering down to 1/10,000 of a micron. As this push for RO home filtration continues, there is also a growing trend to have some minerals added back in to the water,