Five common types of filters include sediment filters, activated carbon filters, reverse osmosis membranes, UV filters, and ion exchange filters. Sediment filters physically trap large particles like sand, rust, and silt, acting as the first line of defense in many systems. Activated carbon filters use porous carbon to absorb chemicals, chlorine, and bad tastes, improving water flavor and odor. Reverse osmosis membranes use high pressure to force water through a semi-permeable barrier, removing up to 99% of dissolved solids, bacteria, and viruses for high-purity water. UV filters use ultraviolet light to kill or inactivate microorganisms like bacteria and viruses without adding chemicals, ensuring microbiological safety. Ion exchange filters, often used in water softeners, swap hard minerals like calcium and magnesium for sodium ions, preventing scale buildup in pipes and appliances. Each type addresses specific contaminants, and they are often combined in multi-stage systems for comprehensive purification.
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