Reverse osmosis is highly effective at removing a wide range of contaminants, including: 1) Dissolved salts and minerals like sodium, chloride, copper, chromium, and lead. 2) Chemicals such as chlorine, fluoride, nitrates, and sulfates. 3) Microorganisms including bacteria, viruses, and protozoa. 4) Organic compounds like pesticides, herbicides, and pharmaceuticals. 5) Particulate matter such as rust, silt, and other suspended solids. Our American Made 6 Stage Alkaline Reverse Osmosis System goes even further by also removing PFOA/PFAS and thousands of other contaminants, providing you with the purest, safest water possible.