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Nanofiltration describes a process of water purification that removes small contaminants from the water to produce clean, clear, pure water. Slightly less rigorous than reverse osmosis, nanofiltration is chosen for areas where the water is not in need of complete filtration. While reverse filtration would be an ideal choice for seawater, nanofiltration is often chosen for hard well water and similar waters. Like reverse osmosis, nanofiltration can remove bacteria, viruses, organic chemicals and pesticides. In addition, both procedures can be used to remove calcium and magnesium to soften hard water. However, there are factors that make nanofiltration a more affordable option than reverse osmosis. Chief among these is the fact that reverse osmosis only works under pressure. Nanofiltration requires a much lower water pressure to operate, so energy costs associated with it are therefore far lower. While the difference on a home unit between reverse osmosis and nanofiltration might be negligible, nanofiltration is often preferred on a municipal level. In short, nanofiltration is an effective and adequate purification method for waters that are not exceptionally salty or saturated with dissolved solids. It is more energy effective than reverse osmosis, which is why many cities and counties choose it over reverse osmosis for wide-scale water purification. To learn more about nanofiltration and reverse osmosis purification, call Clean Water Products at 520-293-1561 to talk to one of our hydrology experts today.
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