Reverse osmosis removes molecules, ions, and larger particles from water. Such systems can purify large amounts of drinking water. The technique also removes bacteria and viruses. Unfortunately, it also removes nutrient minerals. Most systems use three times the amount of water they treat.
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The average cost to install a reverse osmosis water purification system is $150 to $300.
Costs vary greatly by region (and even by zip code). To get free estimates from local contractors, please indicate yours.